228 132 
Between Koh Mesan and Koh Chuen, 25-—38 fathoms, stones and shells (*/2). 
S. of Koh Chuen, 30 fathoms, shells (*/2). Koh Mak, sandy coast ('/2). S. of Koh 
Mak, 5—6 fathoms (‘/2). N. of Koh Kahdat, 4—5 fathoms, sand (1). Koh Kahdat, 
1 fathom, sand (*/2). 
Long. 8—34 mm. 
Distribution: — Nicobars, Andamans, Ceylon, Mauritius, Reunion, Rodriguez. 
— Philippines, Japan, Moluccas, Torres Strait, Mast Head Reef (Queensland), Port 
Curtis (Australia), Lifu. 
Cytherea (Caryatis) striata, Gray. 
Chione striata, Gray, The Analyst, VIII, 1838, p. 306. 
Cytherea citrina (non Lamarck), SowErBy, Thesaurus Conchyl., I, p. 686, pl. 132, figs. 117—18. 
Dione striala, Gray, Reeve, Conchol. icon., XIV, Dione, Sp. 44. 
Cytherea (Caryatis) citrina, ROMER, Monogr. d. Molluskengatt. Venus, I, p. 100, pl. 27, fig. 2. 
Callista cilrina, ROCHEBRUNE, Bull. de la Soc. Philomat. de Paris 1881, (Reprint, p. 15, No. 48). 
Meretrix (Pitar) cilrina, FiscHer, Catalogue d. Moll. de l’Indo-Chine, p, 233. 
North coast of Koh Chang ('/2). 
Long. 36 mm. 
Distribution: — Poulo Condor, Philippines, Formosa, Sulu Isls., Kei Bandan, 
Jobi Isl. (Geelwinck Bay). 
C. striata, Gray, has always been referred to C. citrina, Lam., but sufficient 
proof that it is not that species appears to me to be-given by LAmarck’s diagnesis 
(“testa cordata-trigona”) and by DELESSERT’s figure (PI. 8, Fig. 8) of LAMARck’s original 
specimen. Hiparco! has arrived at the same conclusion with regard to the speci- 
mens from the Philippines. HaNntey’s C. striata, Gray?? from the “River Gambia” is 
not Gray’s species of that name, but is identical with C. citrina, Lam. The indi- 
vidual from the Gulf of Siam which I have before me exactly agrees with ROmErR’s 
description and figure (loc. cit.) of C. citrina (= C. striata, Gray). The true C. citrina, 
Lam., occurs around Australia, and is easily distinguished from striata by its more 
triangular form and by its posterior end being considerably more pointed as com- 
pared with the more truncated form of striata. 
Cytherea (Caryatis) minuta, Koch. 
(P]. IV, Figs. 25—27). 
Cytherea minuta, Kocu, Puirirri1, Abbild. u. Beschreib. neuer od. wenig gekannt. Conchylien., I, 1845, 
p. 22 (200), Cytherea, pl. 3, fig. 8. 
(Caryatis) minuta, Kocu, ROMER, Monogr. d. Molluskengatt. Venus, I, p. 124, pl. 33, fig. 1. 
Dione minuta, Kocu, Desuayes, Catalogue of the Conchifera in Brit. Mus., I, p. 73, No. 58. 
Koh Kram, 30 fathoms (1). Koh Chuen, 10—15 fathoms (*/2). W. of Koh 
Chuen, soft clay and mud (*/2). W.’of Koh Chang, 30 fathoms (%/2). W. of Koh 
Chang, 20 fathoms, mud (3). The strand off the mangrove at the station on Koh 
! Opras malacologicas, I, Tom. 2, 1903, p. 198. 
* Sowersy, Thesaurus Conchyl., I, p. 637, pl. 132, fig. 113. 
