140 



lea's §ynopsis of 



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f foBOVATE. 



*esula.t Jan. 



Iiid. esula. D'Orb. 



crassa, Sicain. 



WIDE. 



elongata. Swain. 



•^ensiformis. Spix. D'Orb. 

 *cylinilracea. Lea. 

 *subcyliadracea. Lea. 

 *Buchanensis. Lea. 

 *exilis. Lea. 



OBOVATE. 



*angulata. Lea. 



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r ARCUATE. 



*lenebncosa. Lea. JD'Orft. 

 *arcuata. Per. 

 sinuosa. Lam. 

 *soleniformis. D'Orh. 



The following species are unknown to me : 

 Anodonta folium. Fer. 

 Anodonta Chinensis. Fer. 

 Anodonta curvatus. Fer. 

 Anodonta lugubiis. Say. 

 Anodonta impura. Say. 

 Anodonta arcuta. Cail. 

 Anodonta Taevaii. Rang. 

 Anodonta Ferrarisii. D^Orb. 

 Anodonta lucida. D'Orb. 

 Anodonta Puelcliana. D^Orb. 



Fossil Species. 



Anodonta'? Abyssina. 



Mori. 



t M. D'Orbigny thinks that this is my Blainvilliana, but having his specimens and mine of both the spe- 

 cies, I am induced still to believe that I am correct. The two specimens resemble each other, but are certainly 

 distinct. The deflected palleal cicatrix exists in both, but the esula is more rotund, and the dorsal margin is 

 more sinuous, and the nacre blnish white, while the five or six specimens of Blainvilliana which I have seen 

 are all salmon colour. 



