234 138 
Cytherea sulcatina, LAMARCK, PFEIFFER in MARTINI u. CHEMNITZ, Conchyl. Cabin., XI Bd., 1 Abth., p. 36, 
pl. 12, figs. 1—2. 
Lioconcha — — HipaLco, Obras malacologicas, I, tom. II, 1903, p. 219, No. 329. 
Meretrix (Lioconcha) sulcatina, LAMARCK, ANTHONY, Bull. du Muséum d’Hist. Nat. Paris, 1905, p. 494. 
North of Koh Kahdat, 4—5 fathoms, sand (1/2). 
Long. 34 mm. 
Distribution: — Maldive Archip., Tadjurah Bay. — Philippines, Lifu. 
In “Museum Godeffroy,” 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 = Sowersy, Thesaur. Conchyl., Il, 1855, p. 649, No. 2, pl. 137, figs. 4—7. 
Cytherea (Crista) gibbia, Lamarck, ROMER, Malakozool. Blatter, X Bd., 1862, p. 17, No. 2. 
Circe gibba, LAMARcK, REEVE, Conchol. icon., XIV, Circe, Sp. 21. ze 
Cytherea gibbia, Lamarck, Martini u. CHEMNITZ, Conchyl. Cabin., XI Bd., 1 Abth., p. 51, No. 36, pl. 18, 
figs. 7—9. 
— (Crista) gibbia, LaAMARCK, ROMER, Monogr. d. Molluskengatt. Venus, I, 1869, p. 176, pl. 47, fig. 2. 
Circe gibbia, Lamarck, Epc. Smiru, Rep. on the Lamellibranchiata of the Challenger Exped., p. 143. 
(Crista) gibbia, LAMARCK, FIscHER, Catalogue d. Moll. de l’Indo-Chine, p. 231. 
Crista gibbia, Lamarck, HipaLGo, Obras malacoldgicas, I, tom. I, 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 (Mor tet). 
Distribution: — Singapore, Mergui Isls., 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 Isls. (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, LInNE, Syst. Nat., ed. X, 1758, p. 689, No. 120. — ed. XII, p. 1135, No. 144. — ed. XIII, 
p- 3285, No. 78. — Mus. Ludoy. Ulrice reg., p. 507, No. 72. 
— _ -— CHEMNiTz, Conchyl. Cabin., VII, p. 28, pl. 39, figs. 418—19. 
Cytherea Savignyi, Jonas, Zeitschr. f. Malakozool., 1846, p. 65. 
= —  Saviany, Deser. de Egypte, Coquilles, pl. VIII, fig. 17. 
_— Crista) Savignyi, Jonas, IssEL, Malacol. d. Mar Rosso, 1869, p. 70, No. 67. 
Circe pectinata, Linné, Sowerby, Thesaur. conchyl., I, p. 649, pl. 137, figs. 1—3. 
1 PAGENSTECHER, Ueber die von Kossmann am Rothen Meere gesamm. Mollusken, 1877, p. 40. — 
MELviLL and Sranpen, Journ. Linn. Soc., Zoology, vol. 27, p. 194. — MOrcu, Catal. conchyl. que reliq. 
C. P. Kizru tr, 1850, p. 23. 
