131 227 



HiiJAi.r.o (Obras malncolôgicas, I, Toni. 2, 19((3, p. 182) has enuineraied 10 dUTerent 

 colour-variations of Cijth. nieretrix from the Philippines. Dautzenbekg and H. Fischer 

 (Journ. de Conchyl., vol. 53, 1905, pp. 216 — 20) enumerate the synonyms of this 

 well-known species, which form a long list. 



Cytherea (Meretrix) lyrata, Sow. 



Cijlherœa lyrata, Sowerby, Thesaurus Conchj'l, II, 185.'), p. 621, pi. 129, fig. (il. 

 Cytherea — — Keeve, Conchol. icou., XIV, Cytlierea, Sp. 13. 



— (Meretrix) lyrata, Sowerby, Römer, Monogr. d. Moll. Venus, I, p. 36, No. 11, pi. 11, fig. 3. 

 Meretrix lyrata, Sowerby, Morlet, Journ. de Conchyl., vol.37, 1889, p. 168, No. 59. 



— — — Fischer, Catalogue de Moll, de I'lndo-Chine, p. 233. 



Islands in the Gulf of Siam. (Morlet, loc. cit.). 

 Distribution:— Cambodge, Cochin China, Tonkin, Philippines. 

 The present large species, strangely enough, was not collected by the Danish 

 expedition. 



Cytherea (Caryatis) hebraea, Lam. 



Cytherea hehrira, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 568, No. 30. — éd. 2, VI, 1835, p. 308, 



No. 30. 



— — — Delessert, Recueil de coquilles décr. p. Lamarck, 1841, pi. 8, fig. 6. 

 (Caryatis) hebraea, Lamarck, Römer, Monogr. d. Molluskengatt. Venus, I, p. 116, No. 44. 



Circe Hebrœa, Lamarck, Reeve, Conchol. icon., vol.14, 1863, Circe, Sp. 34. 



— hebrœa, — Morlet, Journ. de Conchyl., vol. 37, 1889, p. 169, No. 64. 



Cytherea (Caryatis) hebrœa, Lamarck, Edg. A. Smith, Laraellibranchiata of the Challenger Expedition, 

 1883, p. 138. 



Islands in the Gulf of Siam (Morlet, loc. cit.). 



It is with doubt that I refer a small (8 mm.) single valve from the coast of 

 Koh Kahdat to the present species. 



Distribution: — Ceylon, Persian Gulf, Aden, Red Sea, Seychelles, Natal. — 

 Philippines, Torres Strait, New South Wales. 



It is doubtful whether all the authors who have recorded the present species 

 from the above-mentioned localities have had the true Cyth. hebraea, Lam., before 

 them. It is recorded by several authors (e. g. H. Krebs, O. Mörch, C. T. Simpson, 

 W. H. Dall, etc.) from the West Indies, but these records are due to its having 

 been confounded with Cyth. varians, Hani. 



Cytherea (Caryatis) affinis, Gmel. var. inflata, Sow. 



Cytherœa inflata, Sowerby jun., Thesaurus Conchyl., II, 1855, p. 637, pi. 133, figs. 127—28. 

 Dione — — - Reeve, Conchol. icon., XIV, Dione, Sp. 37. 



— — — - Deshayes, Catalogue of the Concliifera in Brit. Mus., 1853, p. 65, No. 28. 

 Cytherea afßnis, Gmelin var. inflata, Sowerby, Pfeiffer in Martini u. Chemnitz, Conchyl. Cabin., XI, 1 Abth , 



pp. 24—25, 



— (Caryatis) affinis, Gmelin var. inflata, Sow., Römer, Monogr. d. Molluskengatt. Venus, 1, p. 105, 



pi. 33, figs. 6-7. 

 Callisla inflata, Sowerby, Donker, lnde.\ moll. mar. Japon., 1882, p. 201. 

 Pitaria — — Hedley, Proc. Liun. Soc. New Soutli Wales, vol. 31, 1906, p. 460. 



29* 



