1905.] NATURAL SCIENCES OF PHILADELPHIA. 749 



Viviparus angularis (Mflll.)- 

 P. Z .S., 1866, p. 146. 

 Formosa (Swinhoe). Identified by H. Adams. 



AMNICOLID^. 



Stenothyra glabra A. Ad. 



G. Nevill, Handlist Moll. Indian Mus., p. 43. 

 Tokohan (Himgerford). Described from Peiho, China. 



stenothyra formosana Pils. 



Nautilus, XVIII, p. 8, May, 1904. 



Kironten (Hirase). 



CYRENID^. 

 Corbicula fluminea (Miill.). 



Prime, Annals N. Y. Lye. N. H., VIII, p. 60, fig. 4. 

 Taihoku and Kaisanko (Hirase, 1901). 



Corbicula subsulcata Dkr. 



Clessin, Conchyl. Cab. Cycladeen, p. 164, pi. 29, figs. 5, 6 (1879). 

 Formosa (Clessin). Clessin gives no reference to a description of 

 this species by Dunker. 



Corbicula insularis Prime. 



Ann. Lye. N. H. of N. Y., VIII, 1864, p. 414, fig. 67. 



Formosa (Prime). 



Cyrena (Cyrenodonax) formosana Dall. 



Proc. Biol. Soc, Washington, XVI, p. 6, 1903. 



Formosa. 



UNIONID^. 



Anodonta swinhoei H. Adams. 



Anodonta swinhoei H. Ad., P. Z. S., 1866, p. 446. 



Anodon swinhoei H. Ad., Sowerby, Conch. Icon., XVII, pi. 27, fig. 108. Cop- 

 ied by Clessin, Conchyl. Cab. Anodonta, p. 225, pi. 75, fig. 6, and erro- 

 neously credited to Reeve. 



Cristaria swinhoei H. Adams, Simpson, Synopsis of the Naiades, p. 586 (in 

 part). 



Formosa (Swinhoe). The localities ''Tonkin" and ''Cambodia," 

 given by Simpson, had their inception in errors. WTiile the species 

 may prove to be a Cristaria, no evidence making for that view has been 

 published. 



Henry Adams gives the size as, length 90, alt. 50, diam. 28 mm. 

 The figure in Conch. Icon, measures, length 76.5, alt. 47.7 mm. 



