131 227 
HipaLtco (Obras malacologicas, I, Tom. 2, 1908, p.182) has enumerated 10 different 
colour-variations of Cyth. meretrix from the Philippines. DaurzENBERG 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. 
e 
Cytherea (Meretrix) lyrata, Sow. 
Cyther@a lyrata, Sowrrsy, Thesaurus Conchyl., II, 1855, p. 621, pl. 129, fig. 61. 
Cytherea — - REEVE, Conchol. icon., XIV, Cytherea, Sp. 13. 
— (Meretrix) lyrata, Sowrrsy, ROMER, Monogr. d. Moll. Venus, I, p. 36, No. 11, pl. 11, fig. 3. 
Meretrix lyrata, Sowrrsy, MorLeT, Journ. de Conchyl., vol. 37, 1889, p. 168, No. 59. 
FiscHER, Catalogue de Moll. de I'Indo-Chine, p. 233. 
Islands in the Gulf of Siam. (Mortert, 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 hebrea, 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, pl. 8, fig. 6. 
- (Caryatis) hebraea, Lamarck, ROmeR, Monogr. d. Molluskengatt. Venus, I, p. 116, No. 44. 
Circe Hebreea, Lamarck, REEVE, Conchol. icon., vol. 14, 1863, Circe, Sp. 34. 
—  hebrea, — Morter, Journ. de Conchyl., vol. 37, 1889, p. 169, No. 64. 
Cytherea (Caryatis) hebrea, Lamarck, Ene. A. Smiru, Lamellibranchiata of the Challenger Expedition, 
1885, p. 138. 
Islands in the Gulf of Siam (MorteEt, 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. Kress, O. Morcu, C. T. Simpson, 
W. H. Datt, etc.) from the West Indies, but these records are due to its having 
been confounded with Cyth. varians, Hanl. 
Cytherea (Caryatis) affinis, Gmel. var. inflata, Sow. 
Cytherea inflata, Sowrrsy jun., Thesaurus Conchyl., II, 1855, p. 637, pl. 133, figs. 127—28. 
Dione — _ - Reeve, Conchol. icon., XIV, Dione, Sp. 37. 
— = = - Desuayes, Catalogue of the Conchifera in Brit. Mus., 1853, p. 65, No. 28. 
Cytherea affinis, GMELIN var. inflata, SoweRBy, PFEIFFER in Martini u. CHEMNITZ, Conchyl, Cabin., XI, 1Abth., 
pp. 24—25. 
(Caryatis) affinis, GMEin var. inflata, Sow., ROMER, Monogr. d. Molluskengatt. Venus, I, p. 105, 
pl. 33, figs. 6—7. 
Callista inflata, SowEersy, DuNKER, Index moll. mar. Japon., 1882, p, 201. 
Pitaria — = Heptey, Proc. Linn. Soc. New South Wales, vol. 31, 1906, p. 466. 
29" 
