132 



liEA S SYNOPSIS OF 



02 



O 



Oh 

 CO 



O 



WIDE. 



*lanceolatus.t Lea. 



*Anodontoides. Lea. 

 Unio teles'? Raf. 

 Unio teres. Con. 



*parallelopipedoD. Lea. D'Orh. 



*platyrhynchus.:}: Rossmaesler. 



*Cailliaudii. Fer. 



*ovalis. Flem. Sow. 



Mytilus angustior.§ List. 



Mya ovalis. Monta. 



Myaovata. Don. Mat. Wood. Dill. 



Mya depressa. Don. 



Mysca solida. Turt. 



Unio nodulosa. Lam. 



Unio tumida. Retz. Pfeif. JVi/. 



Unio Michaudiana 1 Des Moul. 



Unio ovata. Bouil. 



Unio rostiata. Stud. 



Unio Limagnse. Bouil. 



*pictorunf). Lam. Pfeif. Drap. Blain. 



Crouch. Flem. Des Moul. Grat. 



Bouil. 

 Mya pictoruni. Lin. Poli. Dill. 



Wood. Mat. 

 Mya corrugala Maroccana.y Chem. 

 Long thick horse mussel. Peliv. 



m 



o 

 iz; ^ 



o 



WIDE. 



Mya angustata. Schrmt. Klein. 



Mysca pictorum. Turt. 



Uiiio rostrata. Lam. Pfeif. Mich. 



Desh. Bouil. 

 Unio nianca. Lam. 

 Unio elongatula. Miihl. 

 Unio Tuitonii. Payraud. 

 Unio CapigHolo. Payraud. 

 Unio Requienii. Mich. 

 Unio Deshayesii. Mich. 

 Unio limosa. JV«7. 

 Unio longirostris. Zeigl. 

 Unio Liraovianscae. jFer. 



*elongatus. P/e'/. 



prod actus. Con. 



*nasutus. jSay. Barn. Swain. 

 Unio rostratus. Valen. 

 Mya nasuta. Wood. 

 Unio subroslratus] jSay. 



*Fisherianus. Lea. 



*Jayensis. Lea. 



*higubris. Lea. 



*marginahs. Lam. 



Unio anodon(ina. Lam. 



t M. Deshayes (2d edit. Lamarck) doubts if lanceolatiis be not the young of Anodontoides. The first has been 

 found only in the waters east of the Alleghany mountains, the last only in the western waters. There cannot 

 be a doubt of their being distinct species. In size they differ altogether. 



J This is a curious and very interesting new species which I recently received from Vienna. Its habitat is 

 Carynthia. 



§ On the authority of Fleming. 



il Chemnitz figures this shell, Vol. VI. table 3, fig. 23 & 24. From the description and outline, I have 

 little doubt of its being a young pictorum, more than usually undulated in the region of the beaks. Its being ru- 

 gose over the whole surface, as mentioned by him, is not evidence against its being such. As the first growth 

 subsequently forms the beak of the shell, it ought of course to be rugose, if that be the character of the shell. 

 The inside view is without leelii, but this is doubtless the fault of the draftsman or engraver, as the author 

 speaks of the hinge being like the common mussel. 



