121 217 
The specimens from the Gulf of Siam exhibit, as is always the case in this 
species, great variation in their coloration; there are specimens which are’ almost 
entirely white, and individuals in which the rays are slightly indicated, also 
forms in which the rays are very definite, and dark brown, lilac, ete. in colour. 
R6émeEr’s D. Deshayesii (Dkr.) is scarcely DUNKER’s species; it is more probably a form 
of D. cuneatus, and this V. Bertin and Hipatco also think. ZELEBOR’s Donax 
(Latona) granosus' from Amboina does not belong to the present species; as far 
as I can see it is nearer to D. euglyptus, Dkr. (= D. compressus, Lam.), at any rate 
it is not LamMARcK’s granosus. 
Donax (Latona) faba, Ch. 
Donax Faba, Cuemnirz, Conchyl. Cabin., VI, 1782, p. 270, pl. 26. figs. 266—67. 
— — — Sowersy, Thesaur. Conchyl., II, 1866, p. 312, No. 45, pl. 283, figs. 108 —9. 
—  (Latona) Faba, Cuemnirz, ROMER in Martini u. CHEMNITZ, Conchyl. Cabin., X Bd., 3 Abth., 1869, 
p. 88, pl. 2, figs. 12—13 and 15—17. 
a — V. BerTIN, Révision d. Donacidées, p. 109, No. 94. 
— faba, CHEmnitz, P. Fiscurer, Catalogue d. Moll. de Indo Chine, p. 241. 
—  Faba, — HipaLGo, Fauna malacol. de 1. isl. Filipinas, I, p. 169, No. 293. 
— radiata, SPENGLER, ScuROTER, Einleit. in d. Conchylienkenntn., III, 1786, p. 104, No. 11, pl. 8, fig. 3. 
— — ScHROTER, GMELIN, Syst. Nat. ed. XIII, 1790, p. 3266, No. 17. 
— radians, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p.547, No.6. — éd.2, VI, p. 241, No. 6. 
Encyclop. méthod. Moll., pl. 261, fig. 7 (non radians, Reeve et Sowerby). 
Coast of Lem Ngob (1). South coast of Koh Chang, sand (5). Koh Kahdat, 
1 fathom, sand (43). Koh Mak, sandy coast (1 + '/2), 
Islands in the Gulf of Siam (L. Mortet). 
Long. 14—26 mm. 
Distribution:— Salanga, Madras, Gulf of Manaar, Malabar Coast, Gulf of 
Oman, Assab (CarAMAGNA), Mauritius, “South Africa” (SowERBy). — Cochin China, 
Tonkin (banks of Song-kai (Red River)), Hong Kong, Liukiu Isls. (B6OrrGER), Philip- 
pines, Moluccas, Java, New Guinea, Sorong, Port Jackson, New Caledonia, Viti Isls. 
SoweErRBy” considers D. Deshayesii, Dunker (from Lower Guinea), to be a variety 
of D. faba, Chemn. — D. splendens, Dkr.,* is very closely related to the present 
species. 
Fam. Cardiliidae. 
Cardilia inermis, Desh. 
Cardilia inermis, DEsHAyES, Magazin de Zoologie, 1844, p. 6, pl. 100. 
P. FiscHER, Journ. de Conchyl., 1861, vol. IX, p. 342. 
= = = REEVE, Conchol. icon., vol. XIX, Cardilia, Sp. 2. 
' DuNKER u. ZELEBOR, Verhandl. d. k. k. zool. botan. Ges. Wien, 1866, p. 916. — G. v. FRAUENFELD, 
Mollusken d. Novara Expedition, p. 15, pl. 2, fig. 27. 
* Thesaurus Conchyliorum, III, Dona, pl. IV, figs. 108—9 (and the explanation of plates). 
5 Novitates Conchologicae. Meeres Conchyl., p. 79, No. 87, pl. 25, fig, 5. 
D. K. D. Vidensk. Selsk. Skr., 7. Reekke, naturvidensk. og math. Afd. V. 3. 28 
