119 215 
Leptomya spectabilis, Hanl. 
Leptomya spectabilis, HANLEy, Proc. Zool. Soc. London, 1882, p. 576. 
— -- -- Journ. Linnean Society, Zoology, XVI, 1883, p. 541, pl. 12, fig. 7. 
South of Koh Mak, 5—6 fathoms ('/2). 
Long. 3°5 mm. 
Distribution: — Japan(?). 
In spite of the small size of the specimen, I do not doubt that the determina- 
tion is correct. 
Fam. Donacidae. 
Donax (Hecuba) acuticarinatus, Sow. 
Donax acuticarinatus, SowERBy, Thesaur. Conchyl., III, 1866, p. 305, No. 3, pl. 280, figs. 6—7. 
(Hecuba) acutocarinatus, Sowrrsy, V. Bertin, Révision d. Donacidées, p.81, No. 6. 
— acutocarinatus, Sowrrsy, P. Fiscuer, Catal. d. Moll. de I’'Indo-Chine, p. 240. 
“Siam” (SOWERBY). 
The Danish Expedition to Siam collected no specimens of this species. 
Donax (Serrula) incarnatus, Chemn. 
(Pl. IV, Figs. 12—13). 
Donax incarnata, CuEMNirz, Conchyl. Cabin., VI, 1782, p. 265, pl. 26, fig. 259. 
— — — Reeve, Conchol. icon., VIII, Donax, Sp. 53. 
— incarnatus, — Sowersy, Thesaur. Conchyl., UI, p. 311, No. 43, pl. 283, figs. 98—99. 
—  (Serrula) incarnatus, CHEMNITZ, ROMER in Martini u. Coemnitz, Conchyl. Cabin., X Bd., 3 Abth., 
p- 76, No. 47, pl. 2, fig. 11; pl. 13, figs. 9—12. 
— — = — V. Bertin, Révision d. Donacidées, p. 90, No. 26. 
—  incarnatus, CHEMNITZ, DauTzENBERG & FiscHEeR, Journ. de Conchyl., vol. 53, 1905, p. 468. — vol. 
54, 1906, p. 219. 
—  Dysoni, Drsuayrs, Proc. Zool. Soc. London, XXII, 1854, p. 353, No. 167. 
= _ Reeve, Conchol. icon., VII, Donax, Sp. 54. 
_ teeta) Dysoni, DesHayes, ROMER in Martini & Cuemnitz, Conchyl. Cabin., X Bd., 3 Abth., 
p. 69, No. 42, pl. 12, figs. 8—10. 
— _ — = V. Bertin, Révision d. Donacidées, p. 90, No. 27. (non D. Dysoni, 
Lischke = D. semigranosus, Dkr.). 
“Siam” (SOWERBY). 
The Danish Expedition to Siam collected no specimens of this species. 
Distribution: — Malacca, Tranquebar, Malabar Coast, Bombay. — Annam, 
Cochin China. 
It is doubtful whether the authors (e. g. R6MEr) have really had CuEemnirz’s 
species incarnatus for examination, ROMER writes that REEVE does not indicate the 
same species by the name incarnatus, as that to which he himself has applied 
that name, and he is undoubtedly right in this. SpENGLER’s specimens of D. in- 
carnatus from Tranquebar (determined by him as D. muricata L.) are in the Zoo- 
logical Museum of the University of Copenhagen; they precisely agree with 
Cuemnitz’s figure of incarnatus. 
