昨日の関東地方は大変だったようですね。通勤が痛勤だった方、暖かいお風呂に入り、ゆっくり手足をもみほぐしてください。
糸島市は幸いほんの僅かな霙で済みましたが、寒さはかなりのものでした。それでも好き人が5人、テニスを楽しみました。その後、友人から貰った春菊苗を畑に植え、代わりに友人にあげる蕗の根っこを少し掘りました。
夜、鹿嶋市の友人に電話したらほんのわずか雪が落ちてきただけで存外暖かだったようです。
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Radiolites (f.) Lamarck, 1801: 130, type species (M) Ostracites angeiodes Picot de la Peyrouse, 1781, Description de plusieurs nouvelles espèces d’Orthoceratites et d’Ostracites, pls. 12-13 (fide Lamarck, 1801: 130); Radiolitidae. Pierre à rayons (Chenu, 1847a: 115; 1847b: 195); radius, a ray (Woodward, 1868: 446); N.L. –lites, combining form from Gr. lithos, stone. 放射状の彫刻がある二枚貝化石；ラディオリーテス科
Radobornia (f.) Dall, Bartsch & Rehder, 1938, 153: 140, type species (OD) Radobornia araia Dall, Bartsch & Rehder, 1938, 153: 140-141, pl. 37, figs. 5-8; Lasaeidae. チリハギガイ科チチノシタタリガイ属 143
Radula (f.) Mörch, 1853, 2: 56-57, type species (T) Limaria vulgaris Link, 1807, (3): 157 [= Radula. Pecten testa ovali, …: Chemnitz, 7: 349-351, pl. 68, fig. 651, not binominal] [non Gray, 1842, ed. 44: 90 (fide Herrmannsen, 1848, 2: 386); = Lima Bruguière, 1797: pl. 206 (fide Habe, 1977: 99)]; Limidae. ミノガイ科（ミノガイ属）
Raeta (f.) Gray, 1853, [2], 11(61): 43, type species (M) Mactra campechensis Gray, 1825, n.s., 9 [25]: 135; Mactridae. Etymology unknown (Fischer, 1887: 1117); an artificial word without meaning (Emerson & Jacobson, 1976). 語源不詳、或は造語（意味は無い）；バカガイ科アメリカヤチヨノハナガイ属 184
Raetella (f.) Dall, 1895, 1(5): 212, nom. nud.; Dall, 1898, 3(4): 882-883, type species (OD) Raeta tenuis [Hinds MS] Dall, 1898, 3(4): 883, footnote; Mactridae. Raeta Gray, 1853, [2], 11(61): 43; -ella. 小さなRaeta；バカガイ科
Raetellops (m.: ICZN Art. 30.1.4.3) Habe, 1952, (3): 197, type species (OD) Poromya pulchella A. Adams & Reeve, 1850, (3): 83, pl. 23, fig. 1, Borneo, 1850; Mactridae. Raetella Dall, 1895; ops. Raetellaの外見をしたもの；バカガイ科チヨノハナガイ属 186
Raetina (f.) Dall, 1898, 3(4): 882, type species (OD) Raeta indica Dall, 1898, 3(4): 882-883, footnote; Mactridae. Raeta Gray, 1853, [2], 11(61): 43; -ina, “like Raeta but small” (Dall, 1898: 882). 小さなRaeta；バカガイ科ヤチヨノハナガイ属 184
Rangia (f.) Des Moulin, 1832, 5(25): 50-57, type species (M) Rangia cyrenoides Des Moulin, 1832, 5(25): 57-58, pl. (no number), figs. 1-3 [= Gnathodon cuneatus G. B. Sowerby I, 1832, 1: [genus no. 225], 2: pl. 40 [218]; Mactridae. Dedicated to French malacologist Sander Rang (1784-1859). フランスの貝類研究者ラングに因む；バカガイ科
Redicirce (f.) Iredale, 1936, 19(5): 276, type species (OD) Redicirce mistura Iredale, 1936, 19(5): 276, pl. 21, fig. 3; Veneridae. ?Redi, Francesco (1626-1698, Italian naturalist); Circe Schumacher, 1817: 152. イタリアの博物学者Rediに因む（？）；マルスダレガイ科トモシラオガイ属 254
Regozara (m.) Iredale, 1936, 19(5): 275, type species (OD) Regozara olivifer Iredale, 1936, 19(5): 275-276, pl. 20, fig. 8; Cardiidae. Etymology unknown, or derived from surname Regozar? 人名Regozarに因む（？）；ワダチザルガイ科リュウキュウザルガイ属 （Regozaraの性は原著者の扱いに従う）
Rengea (f.) Kuroda & Habe in Kuroda, Habe & Oyama, 1971: 736, 486, type species (OD) Myonera fluctuosa Kuroda, 1948, 15(1-4): 25-26, pl. 2, fig. 20 [= Cuspidaria (Myonera) caduca E. A. Smith, 1894, [6], 14: 170, pl. 5, figs. 9-10, Andaman Sea]; Cuspidariidae. renge, J., the ceramic spoon similar to the shape of a petal of lotus scattered. 蓮華（散り蓮華の略）、散った1枚の蓮の花びらの形に似た陶製匙；シャクシガイ科レンゲシャクシガイ属 323
Reniella (f.) Swainson, 1840: 386, type species (M) Reniella dilatata Swainson, 1840: 386, fig. 127; Malleidae. Gr. ren, a sheep or lamb (Jaeger, 1959), or L. renes (ium or um), m., the kidneys, reins (Lewis, 1915); -ella. 仔羊、小さな腎臓；ホウオウガイ科（ホウオウガイ属） 73
Requienia (f.) Mathéron, 1842, 6: 174, type species (OD) Chama ammonia Goldfuss, 1838, Petrefacta Germaniae, 2(6): 205, fig. 3, pl. 15, figs. 1-2 (fide Sherborn, 1922, sec. 2, (1): lx); Requieniidae. Dedicated to Esprit Requien (1788-1851), author of a Catalogue of Corsican Mollusca. 仏貝類研究者E.ラキェインに因む；ラキェイン科
Rexithaerus (m.) Tryon, 1869, Amer. Jour. Conch., 4(5): Appendix p. 104 (fide Habe, 1977: 209; Vokes, 1980: 146), type species (SD Dall, 1900b, 23(1210): 292) Tellina secta Conrad, 1837, 7(2): 257-258, Sta. Diego; Tellinidae. Gr. rexis, (Gr. regnumi), a breaking, a rent, cleft (Liddell & Scott, 1953); Gr. thaeros, the hinge of a door or gate (Liddell & Scott, 1953). 門扉の蝶番の裂け目；ニッコウガイ科サギガイ属 209
rhamphus Gr. ramphos, the crooked beak of birds (Liddell & Scott, 1953). 湾曲した嘴
rhino- (1) Gr. rhis, gen.Gr. rhinos, the nose, (2) Gr. rhinos, the skin of man; the hide of a beast, ox-hide, wolf’s skin, an oxhide shield (Liddell & Scott, 1953)
Rhinoclama (f.) Dall & E. A. Smith in Dall, 1886, 12(6): 300, new name for Rhinomya A. Adams, 1864a, [3], 13: 207; Cuspidariidae. (1) Gr. ris, gen.rinos, (2) Gr. rinos; clam. 鼻の形をした二枚貝、或は獣の膚をした二枚貝；シャクシガイ科 322
Rhinomya (f.) A. Adams, 1864a, [3], 13: 207, type species (SD Stoliczka, 1871, 3: 38) Neaera philippinensis Hinds, 1843, pt. 11, for 1843: 78, Mindanao and Luzon Islands, Philippines [non Rhinomya Robineau-Desvoidy, 1830, 2: 123, Dipt., nec Geoffroy Saint-Hilaire, 1832, Études zoologiques, (I), Mamm. (fide Sherborn, 1930, (2): 5499), nec Geoffroy Saint-Hilaire, 1832, 2: x, Classe 2, Oiseaux pl. 3, Aves]; Cuspidariidae. rhino-; myax シャクシガイ科 322
rhynchus Gr.rhynchos, eos, to, a beak, bill, nell of the birds (Liddell & Scott, 1953). 嘴
Rictocyma (n.) Dall, 1871, 7(2): 151, type species (OD) Astarte (Rictocyma) mirabilis Dall, 1871, 7(2): 151, pl. 14, fig. 6 [= Crassatella esquimalti Baird, 1863, for 1863: 70, Vancouver Island; Crassatellidae. Gr.rhktos, broken; Gr. kyma, wave (Dall, 1871, 7(2): 151). 壊された波；エゾシラオガイ科フルスダレシラオガイ属
Robaia (f.) Habe, 1958c, 6(3): 248, as Nuculana (Robaia), type species Leda robai Kuroda, 1929, 1(3): app. 7, text-figs. 6-7; 1(4): app. 9; Nuculanidae. J. robai, Chimonanthus praecox (L.) Link, 1822, (2): 66, a shrub in garden, with fragrant flowers in early spring. 蝋梅（の花）；ロウバイガイ科チリロウバイガイ属 23
Rocellaria (f.) Blainville, 1828, 57: 244, type species (M) Gastrochaena modiolina Lamarck, 1818, 5: 447 [= Mya dubia Pennant, 1777, ed. 4, 4: 82]; Gastrochaenidae. ツクエガイ科（ツクエガイ属） 287
Rochefortia (f.) Vélain, 1877, 6: 132-133, type species (M) Rochefortia australis Vélain, 1877, 6: 133, pl. 5, figs. 9-11; Montacutidae. ブンブクヤドリガイ科
Rochefortina (f.) Dall, 1924, 37: 88, type species (OD) Rochefortia (Rochefortina) semele Dall, 1924, 37: 88, Oahu [= Ervilia sandwichensis E. A. Smith, 1885, 13(35), Zool.: 22, 81-82, pl. 25, figs. 5-5b, Honolulu]; Mesodesmatidae. チドリマスオガイ科ハコベノハナガイ属 188
rudis L. (1) is, f., slender stick, spatula, a foil used in practice-experiences by soldiers and gladiators, (2) adj. B, in the natural state, not improved, rudely finished, rude, unpolished (田中, 1966; W. Smith & Lockwood, 1976), rough, unused, raw, wild (Jaeger, 1959; 田中, 1966). (1) 棒、つえ、剣闘用の刀、(2) 粗い、ザラザラした、粗野な、洗練されていない
rudists L. rudis; L. ista, agent, one who (Brown, 1956). 棒状のもの；厚歯二枚貝類
Ruditapes (m.) Chiamenti, 1900, 20(1-2): 11, 13, type species (SD Dall, 1902, 26(1312): 363) Venus decussata Linnaeus, 1758, ed. 10, 1: 690; Veneridae. L. rudis; Tapes Megerle von Mühlfeld, 1811, 5(1): 51. ザラザラしたリュウキュウアサリ類；マルスダレガイ科アサリ属
Rugosoxyperas (n.) Habe, 1977: 182, type species (OD) Mactra (Spisula) asperaeformis Nomura & Zinbo, 1934, [2], 16(2): 126, 156-157, pl. 5, figs. 20a-b; Mactridae. L. rugosus, adj. A, wrinkled, shrivelled (W. Smith & Lockwood, 1976); Oxyperas Mörch, 1853, (2): 4. 縮んで皺が寄ったホクロガイ属；バカガイ科サメハダホクロガイ属 182
Rupellaria Fleuriau de Bellevue, 1802, 54: 347, type species (M) Venus lithophaga Retzius, 1788, 3, Mém. Corr.: 11-14; Petricolidae. イワホリガイ科クシケガイ属 275
Ryenella (f.) Fleming, 1959, 87: 172-173, type species (OD) Mytilus impactus Hermanns, 1782, 17: 152, Australia; Mytilidae. Naming after Dr. Tron Soot-Ryen, director of Tromso Museum, Norway; -ella. Soot-Ryenに因む小形の貝；イガイ科 59
糸島市は幸いほんの僅かな霙で済みましたが、寒さはかなりのものでした。それでも好き人が5人、テニスを楽しみました。その後、友人から貰った春菊苗を畑に植え、代わりに友人にあげる蕗の根っこを少し掘りました。
夜、鹿嶋市の友人に電話したらほんのわずか雪が落ちてきただけで存外暖かだったようです。
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R
Radiolites (f.) Lamarck, 1801: 130, type species (M) Ostracites angeiodes Picot de la Peyrouse, 1781, Description de plusieurs nouvelles espèces d’Orthoceratites et d’Ostracites, pls. 12-13 (fide Lamarck, 1801: 130); Radiolitidae. Pierre à rayons (Chenu, 1847a: 115; 1847b: 195); radius, a ray (Woodward, 1868: 446); N.L. –lites, combining form from Gr. lithos, stone. 放射状の彫刻がある二枚貝化石；ラディオリーテス科
Radobornia (f.) Dall, Bartsch & Rehder, 1938, 153: 140, type species (OD) Radobornia araia Dall, Bartsch & Rehder, 1938, 153: 140-141, pl. 37, figs. 5-8; Lasaeidae. チリハギガイ科チチノシタタリガイ属 143
Radula (f.) Mörch, 1853, 2: 56-57, type species (T) Limaria vulgaris Link, 1807, (3): 157 [= Radula. Pecten testa ovali, …: Chemnitz, 7: 349-351, pl. 68, fig. 651, not binominal] [non Gray, 1842, ed. 44: 90 (fide Herrmannsen, 1848, 2: 386); = Lima Bruguière, 1797: pl. 206 (fide Habe, 1977: 99)]; Limidae. ミノガイ科（ミノガイ属）
Raeta (f.) Gray, 1853, [2], 11(61): 43, type species (M) Mactra campechensis Gray, 1825, n.s., 9 [25]: 135; Mactridae. Etymology unknown (Fischer, 1887: 1117); an artificial word without meaning (Emerson & Jacobson, 1976). 語源不詳、或は造語（意味は無い）；バカガイ科アメリカヤチヨノハナガイ属 184
Raetella (f.) Dall, 1895, 1(5): 212, nom. nud.; Dall, 1898, 3(4): 882-883, type species (OD) Raeta tenuis [Hinds MS] Dall, 1898, 3(4): 883, footnote; Mactridae. Raeta Gray, 1853, [2], 11(61): 43; -ella. 小さなRaeta；バカガイ科
Raetellops (m.: ICZN Art. 30.1.4.3) Habe, 1952, (3): 197, type species (OD) Poromya pulchella A. Adams & Reeve, 1850, (3): 83, pl. 23, fig. 1, Borneo, 1850; Mactridae. Raetella Dall, 1895; ops. Raetellaの外見をしたもの；バカガイ科チヨノハナガイ属 186
Raetina (f.) Dall, 1898, 3(4): 882, type species (OD) Raeta indica Dall, 1898, 3(4): 882-883, footnote; Mactridae. Raeta Gray, 1853, [2], 11(61): 43; -ina, “like Raeta but small” (Dall, 1898: 882). 小さなRaeta；バカガイ科ヤチヨノハナガイ属 184
Rangia (f.) Des Moulin, 1832, 5(25): 50-57, type species (M) Rangia cyrenoides Des Moulin, 1832, 5(25): 57-58, pl. (no number), figs. 1-3 [= Gnathodon cuneatus G. B. Sowerby I, 1832, 1: [genus no. 225], 2: pl. 40 [218]; Mactridae. Dedicated to French malacologist Sander Rang (1784-1859). フランスの貝類研究者ラングに因む；バカガイ科
Redicirce (f.) Iredale, 1936, 19(5): 276, type species (OD) Redicirce mistura Iredale, 1936, 19(5): 276, pl. 21, fig. 3; Veneridae. ?Redi, Francesco (1626-1698, Italian naturalist); Circe Schumacher, 1817: 152. イタリアの博物学者Rediに因む（？）；マルスダレガイ科トモシラオガイ属 254
Regozara (m.) Iredale, 1936, 19(5): 275, type species (OD) Regozara olivifer Iredale, 1936, 19(5): 275-276, pl. 20, fig. 8; Cardiidae. Etymology unknown, or derived from surname Regozar? 人名Regozarに因む（？）；ワダチザルガイ科リュウキュウザルガイ属 （Regozaraの性は原著者の扱いに従う）
Rengea (f.) Kuroda & Habe in Kuroda, Habe & Oyama, 1971: 736, 486, type species (OD) Myonera fluctuosa Kuroda, 1948, 15(1-4): 25-26, pl. 2, fig. 20 [= Cuspidaria (Myonera) caduca E. A. Smith, 1894, [6], 14: 170, pl. 5, figs. 9-10, Andaman Sea]; Cuspidariidae. renge, J., the ceramic spoon similar to the shape of a petal of lotus scattered. 蓮華（散り蓮華の略）、散った1枚の蓮の花びらの形に似た陶製匙；シャクシガイ科レンゲシャクシガイ属 323
Reniella (f.) Swainson, 1840: 386, type species (M) Reniella dilatata Swainson, 1840: 386, fig. 127; Malleidae. Gr. ren, a sheep or lamb (Jaeger, 1959), or L. renes (ium or um), m., the kidneys, reins (Lewis, 1915); -ella. 仔羊、小さな腎臓；ホウオウガイ科（ホウオウガイ属） 73
Requienia (f.) Mathéron, 1842, 6: 174, type species (OD) Chama ammonia Goldfuss, 1838, Petrefacta Germaniae, 2(6): 205, fig. 3, pl. 15, figs. 1-2 (fide Sherborn, 1922, sec. 2, (1): lx); Requieniidae. Dedicated to Esprit Requien (1788-1851), author of a Catalogue of Corsican Mollusca. 仏貝類研究者E.ラキェインに因む；ラキェイン科
Rexithaerus (m.) Tryon, 1869, Amer. Jour. Conch., 4(5): Appendix p. 104 (fide Habe, 1977: 209; Vokes, 1980: 146), type species (SD Dall, 1900b, 23(1210): 292) Tellina secta Conrad, 1837, 7(2): 257-258, Sta. Diego; Tellinidae. Gr. rexis, (Gr. regnumi), a breaking, a rent, cleft (Liddell & Scott, 1953); Gr. thaeros, the hinge of a door or gate (Liddell & Scott, 1953). 門扉の蝶番の裂け目；ニッコウガイ科サギガイ属 209
rhamphus Gr. ramphos, the crooked beak of birds (Liddell & Scott, 1953). 湾曲した嘴
rhino- (1) Gr. rhis, gen.Gr. rhinos, the nose, (2) Gr. rhinos, the skin of man; the hide of a beast, ox-hide, wolf’s skin, an oxhide shield (Liddell & Scott, 1953)
Rhinoclama (f.) Dall & E. A. Smith in Dall, 1886, 12(6): 300, new name for Rhinomya A. Adams, 1864a, [3], 13: 207; Cuspidariidae. (1) Gr. ris, gen.rinos, (2) Gr. rinos; clam. 鼻の形をした二枚貝、或は獣の膚をした二枚貝；シャクシガイ科 322
Rhinomya (f.) A. Adams, 1864a, [3], 13: 207, type species (SD Stoliczka, 1871, 3: 38) Neaera philippinensis Hinds, 1843, pt. 11, for 1843: 78, Mindanao and Luzon Islands, Philippines [non Rhinomya Robineau-Desvoidy, 1830, 2: 123, Dipt., nec Geoffroy Saint-Hilaire, 1832, Études zoologiques, (I), Mamm. (fide Sherborn, 1930, (2): 5499), nec Geoffroy Saint-Hilaire, 1832, 2: x, Classe 2, Oiseaux pl. 3, Aves]; Cuspidariidae. rhino-; myax シャクシガイ科 322
rhynchus Gr.rhynchos, eos, to, a beak, bill, nell of the birds (Liddell & Scott, 1953). 嘴
Rictocyma (n.) Dall, 1871, 7(2): 151, type species (OD) Astarte (Rictocyma) mirabilis Dall, 1871, 7(2): 151, pl. 14, fig. 6 [= Crassatella esquimalti Baird, 1863, for 1863: 70, Vancouver Island; Crassatellidae. Gr.rhktos, broken; Gr. kyma, wave (Dall, 1871, 7(2): 151). 壊された波；エゾシラオガイ科フルスダレシラオガイ属
Robaia (f.) Habe, 1958c, 6(3): 248, as Nuculana (Robaia), type species Leda robai Kuroda, 1929, 1(3): app. 7, text-figs. 6-7; 1(4): app. 9; Nuculanidae. J. robai, Chimonanthus praecox (L.) Link, 1822, (2): 66, a shrub in garden, with fragrant flowers in early spring. 蝋梅（の花）；ロウバイガイ科チリロウバイガイ属 23
Rocellaria (f.) Blainville, 1828, 57: 244, type species (M) Gastrochaena modiolina Lamarck, 1818, 5: 447 [= Mya dubia Pennant, 1777, ed. 4, 4: 82]; Gastrochaenidae. ツクエガイ科（ツクエガイ属） 287
Rochefortia (f.) Vélain, 1877, 6: 132-133, type species (M) Rochefortia australis Vélain, 1877, 6: 133, pl. 5, figs. 9-11; Montacutidae. ブンブクヤドリガイ科
Rochefortina (f.) Dall, 1924, 37: 88, type species (OD) Rochefortia (Rochefortina) semele Dall, 1924, 37: 88, Oahu [= Ervilia sandwichensis E. A. Smith, 1885, 13(35), Zool.: 22, 81-82, pl. 25, figs. 5-5b, Honolulu]; Mesodesmatidae. チドリマスオガイ科ハコベノハナガイ属 188
rudis L. (1) is, f., slender stick, spatula, a foil used in practice-experiences by soldiers and gladiators, (2) adj. B, in the natural state, not improved, rudely finished, rude, unpolished (田中, 1966; W. Smith & Lockwood, 1976), rough, unused, raw, wild (Jaeger, 1959; 田中, 1966). (1) 棒、つえ、剣闘用の刀、(2) 粗い、ザラザラした、粗野な、洗練されていない
rudists L. rudis; L. ista, agent, one who (Brown, 1956). 棒状のもの；厚歯二枚貝類
Ruditapes (m.) Chiamenti, 1900, 20(1-2): 11, 13, type species (SD Dall, 1902, 26(1312): 363) Venus decussata Linnaeus, 1758, ed. 10, 1: 690; Veneridae. L. rudis; Tapes Megerle von Mühlfeld, 1811, 5(1): 51. ザラザラしたリュウキュウアサリ類；マルスダレガイ科アサリ属
Rugosoxyperas (n.) Habe, 1977: 182, type species (OD) Mactra (Spisula) asperaeformis Nomura & Zinbo, 1934, [2], 16(2): 126, 156-157, pl. 5, figs. 20a-b; Mactridae. L. rugosus, adj. A, wrinkled, shrivelled (W. Smith & Lockwood, 1976); Oxyperas Mörch, 1853, (2): 4. 縮んで皺が寄ったホクロガイ属；バカガイ科サメハダホクロガイ属 182
Rupellaria Fleuriau de Bellevue, 1802, 54: 347, type species (M) Venus lithophaga Retzius, 1788, 3, Mém. Corr.: 11-14; Petricolidae. イワホリガイ科クシケガイ属 275
Ryenella (f.) Fleming, 1959, 87: 172-173, type species (OD) Mytilus impactus Hermanns, 1782, 17: 152, Australia; Mytilidae. Naming after Dr. Tron Soot-Ryen, director of Tromso Museum, Norway; -ella. Soot-Ryenに因む小形の貝；イガイ科 59