﻿414 ANODONTA 



A rather small, nnich intlatcd. stroni;' si)ecies, with a most 

 (Iccitlcd, sliarj) iiostcrior rid^e. There are one or two feeble 

 radial ridires on the posterior slope. 



AnodonTa FLUMiNEA (lleude). 



vShell short, irreg-iilarly ovate or elliptical, inflated, slightly 

 inequilateral ; beaks only moderately full or high, corrugated ; 

 posterior ridge full, subangular ; surface subsulcate, greenish 

 brown ; nacre bluish, dull and lurid. 



Length 75, height 48, diam. 40 mm. 



Length 62, height 40, diam. 32 mni. 



China. 

 Anodon flnminea Heude, C. F. Nank., lU. 1877, pi. xx, lig. 42. 

 Anodonta iiuminea P.iri'EL, C. Sam.. lU, 1890, p. 179. — Simp- 

 son, Syn., 1900, p. 640. 

 Anodon torrentis Hicudk, C. F. Nank.. I\'. 1878, pi. xxix, fig. 



61. 



Heude gives a brief and wholly inadecpiate Latin description 

 of this form. It is a short oval or subelliptical form with a 

 moderately well-developed posterior ridge and dirty nacre. His 

 figure of A. torrentis seems to agree very well with his flu- 

 viinca and the dimensions, which T have given in the second 

 line, do not difTer in proportion. 



Anodonta douolum (Heude). 



Shell irregularly elliptical, inflated, thin, nearly equilateral, 

 with rather full beaks, which project slightly above the dorsal 

 line, somewhat corrugated : posterior ridge well developed, sul>- 

 angular and slightlv double, ending behind in a sloping feeble 

 biangulation just below the median line; surface with concen- 

 tric growth ridges ; nacre bluish-white. 



Length probably 93. height 58, diam. ? 



Canal of Yang-tcheou, China. 

 Anodon doliolinn Hi:ri)ic, C. F. Nank.. IW 1878, pi. xxvii. fig. 



57- 

 .Inodcuta doliolinn SiMi'SOx. Syn., 1900, p. 640. 



