234 



BIBLIOGRAPHY OF 



Page. 



38 Unio arcus Conrad. 



arctatus Conrad. 

 3S gibbosus Barnes. 



I '. mucronatus Barnes. 

 nasuta Lam. 

 dilatata? Raf. 

 dilaialus Conrad, 

 arctior Lea. 

 Vaughanianus Lea. 



U. Carolinensis Rav. lett. 

 purpuratus Lam. 

 My a ventricosa Solan. 



39 

 39 



39 



Page. 



39 



U. ater Lea. 

 lugubris Say. 

 Poulsoni Conrad. 

 Unio cuprinus Lea. 



U. metallicus Say. 

 tnodioliformis L>u. 

 U. delumbis Conrad. 

 _ tenerus Rav. 



U. tencbrosus Conrad. 

 Tappanianus Lea. 

 stramineus Conrad. 

 monodontus Say. 

 U. soleniformis Lea. 



[The following species are known to the author hy name only. — W. <>. B.] 



Page. 

 41 Unio Grcenlandicus SchrO't. 



4! 



purpuriatus Say. 



41 Unio oviformis Conrad. 

 41 furvus Conrad. 



Subgenus ftlargaritana. 



(Stmphtxote.) 

 (a. Plit 

 43 Margaritana complanata Zro. 

 Alas, complanata Barnes. 

 Symph. complanata Lea. 



43 



43 

 43 



44 



44 



44 



(Xo.v Stmphtkotb.) 



(a. Plicate.) 



confragosa Lea. 



Alas, confragosa Say. 

 arcula /•■ a. 

 marginata Lea. 



nnata Say. 

 truncata Say. 

 Unio cariosd Lam. (var. 2.) 

 varicosa Lam. 

 olus Say. 

 Mya r< gulosa Wood, 

 rugosa Lea. 



Alas, rugosa Barnes. 

 abducta Say. 



(b. Smo 

 deltoidea Lea. 

 undulata Z .- a. 



Alas, undulata Say. 



Alas, sculptilis (y'ng)Say. 

 Mya undulata Wood. 

 Unio hians Valen. 

 glabratus Sowb. 

 44 Margaritana Raveneliana 



Lea. 



44 radiata L,ea. 



Alas, radiata Conrad. 



45 calceola / a. 



Unio calceolus Lea. 

 Alas, marginata Say. 

 truncata Conrad. 



45 margaritifera / 1 a. 



Mya margaritifera Linn. 

 Margaritana fiuviatilis 



Schum. 

 Unio elongata Lam. 

 sinuata Pfeif. 

 Jioissyi Mich. 

 margaritiferus Pfeif. 

 rivalis Zeig. 

 Al. margaritiferum Flem. 

 arcuata Barnes. 

 4(3 Holstonia Lea. 



46 fabula Lea. 



