NORTII AMERICAN CONCHOLOGT. 



227 



[Eere follows a list of species with, which the author is unacquainted. 

 No habitats being given, I cannot be sure of any being American, but pre- 

 sume the following to be so. — W. G. B.] 



Tage. 



39 Unio Aberti Conrad. 



40 furvus Conrad. 



40 metastriatus Conrad. 



40 Mexicanus Phil. 



Page. 



40 Unio parallelus Conrad. 

 40 Pequottinus Linsl. 



40 puniceus Iluld. 



40 purpuriatus Say. 



Subgenus Margaritana. 



(Stmpiiyxote. ) 

 (a. Plicate.) 

 42 Margaritana co mplanata Lea. 

 Alas, complanata Barnes. 

 Symph. complanata Lea. 

 Unio complanata Desh. 

 Katherina Lea. 



42 



42 

 42 



42 



42 

 42 



42 



(Non-Symphyxote.) 



(a. Plicate.) 



confragosa Lea. 



Alas, confragosa Say. 

 Unio confragosa Desh. 

 arcula Lea. 

 marginata Lea. 



Alas, marginata Say. 



truncata Say. 

 Unio cariosa Lam. (var.2.) 

 varicosa Lam. 

 calceolus Say. 

 Mi/a regulosa Wood. 

 Alas, corrugata De Kay. 

 rugosa Lea. 



Alas, rugosa Barnes. 



abducta Say. 

 Complanaria rugosa Stim. 



(b. Smooth.) 

 deltoidea Lea. 

 minor Lea. 

 Curreyana Lea. 



42 Margaritana undulata Lea. 



Alas, undulata Say. 



sculptilis (jun.) Say, 

 Strophitus sculptilis Stim. 

 Mya undulata Wood. 

 Unio Mans Valen. 



glabratus Sowb. 



42 Raveneliana Lea. 



43 radiata Lea. 



Alas, radiata Conrad. 

 Uniopsis radiata? Swain, 

 calceola Lea. 



Unio calceolus Lea. 

 Alas, marginata Say. 

 truncata Conrad. 

 Hildrethiana Lea. 



Unio Hildrethianus Lea. 

 Alas, ambigua? Say. 

 dehiscens Lea. 

 Unio dehiscens Say. 

 oriens Lea. 

 margaritifera Lea. 

 M. Jluviatilis Schum. 

 arcuata Stimpson. 

 Unio Carolinianus Bosc. 

 Alas, arcuata Barnes. 

 falcata Gould. 



44 Holstonia Lea. 

 44 fabula Lea. 



(Unknown.) 

 44 Etowaensis Conrad. 



43 



43 



43 



43 



47 



Subgenus Anodonta. 

 (STMrntNOTE ) j 47 Anodonta BenedictensisZca. 



(a. Smooth.) Symph. Benedictensis Lea.. 



Anodonta Wahlamatensis A. cultratus Gould. 



Lea. 47 Nuttalliana Lea. 



