234 138 



Cytherea sulcatina, Lamarck, Pfeiffer in Mahtini u. Chemnitz, Conchyl. Cabin., XI Bd., 1 Abth., p. 36. 



pi. 12, figs. 1—2. 

 Lioconcha — — Hidalgo, Obras malacologicas, 1, tom. II, 1903, p. 219, No. 329. 



Meretrix {Lioconcha) sulcatina, Lamarck, Anthony, Bull, du Museum dHist. Nat. Paris, 1905, p. 494. 



North of Koh Kahdat, 4 — 5 fathoms, sand (^'2). 

 Long. 34 mm. 



Distribution: — Maldive Archip., Tadjurah Bay. — Philippines, Lifu. 

 In "Museum GodefTroy," Catalog V, 1874, p. 169, C. sulcatina, Desh., is recorded 

 from "Africa merid." but this is perhaps due to erroneous determination. 



Circe (Crista) gibbia, Lam. 



Cytherea gibbia, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 577, No. 64. — éd. 2, VI, 1835, p. 323, No. 64. 

 Circe — — Sowekby, Thesaur. Conchyl., II, 1855, p. 649, No. 2, pi. 137, figs. 4-7. 



Cytherea (Crista] gibbia, Lamarck, Römer, Malakozool. Blätter, X Bd., 1862, p. 17, No. 2. 

 Circe gibba, Lamarck, Reeve, Conchol. icon., XIV, Circe, Sp. 21. 



Cytlierea gibbia, Lamarck, Martini u. Chemnitz, Conchyl. Cabin., XI Bd., 1 Abth., p. 51, No. 36, pi. 18, 

 figs. 7-9. 



— {Crista gibbia, Lamarck, Römer, Monogr. d. Molluskengatt. Venus, I, 1869, p. 176, pi. 47, fig. 2. 

 Circe gibbia, Lamarck, Edg. Smith, Rep. on the Lamellibranchiata of the Challenger Exped., p. 143. 



— {Crista} gibbia, Lamarck, Fischer, Catalogue d. Moll.de I'lndo-Chine, p. 231. 

 Crista gibbia, Lamarck, Hidalgo, Obras malacologicas, I, torn. II, 1903, p. 231, No. 336. 



— — — Dautzenberg et Fischer, Journ. de Conchyl., vol. 53, 1905, p. 213. 

 Cytherea ranella, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 578, No. 65. 



Coast of Lem Ngob (7). Coast of Koh Chang (8). North end of Koh Chang, 

 1 fathom, old coral blocks (2). Koh Kahdat ('/2). 



Long. 36 mm. 



Islands in the Gulf of Siam (Morlet). 



Distribution: — Singapore, Mergui Isis., Andamans, Nicobars, Madras, Ceylon, 

 Red Sea (?), Seychelles, Amirantes. — Tonkin, Hong Kong, Formosa, Shanghai, Japan, 

 Philippines, Java, Moluccas, Macassar, New Guinea, Port Denison, New Caledonia, 

 South Sea Isis. (Mus. Godeffroy). 



At present I can see no reason for regarding C. gibbia, Lam., and C.pectinata 

 L. as forms of the same species, as do several authors.^ 



Circe (Crista) pectinata, L. 



Venus pectinata, Linné, Syst. Nat., ed. X, 1758, p. 689, No. 120. - ed. XII, p. 1135, No. 144. — ed. XIII, 

 p. 3285, No. 78. — Mus. Ludov. Ulricæ reg., p. 507, No. 72. 

 — — — Chemnitz, Conchyl. Cabin., VII, p. 28, pi. 39, figs. 418— 19. 



Cytherea Savignyi, Jonas, Zeitschr. f. Malakozool., 1846, p. 65. 



— — — Savigny, Descr. de l'Egypte, Coquilles, pi. VIII, fig. 17. 



— (Crista) Savignyi, Jonas, Issel, Malacol. d. Mar Rosso, 1869, p. 70, No. 67. 

 Circe pectinata, Linné, Sowerbv, Thesaur. conchyl., II, p. 649, pi. 137, figs. 1—3. 



' Pagenstecher, Ueber die von Kossmann am Rothen Meere gesamm. Mollusken, 1877, p. 40. — 

 Melvill and Standen, Journ. Linn. Soc, Zoology, vol. 27, p. 194. — Mörch, Catal. conchyl. quæ reliq. 

 C. P. KiERULF, 185Ü, p. 23. 



