220 



BIBLIOGRAPHY OF 



Page. 



3G9 Unio verrucosus Raf. 



U. tuberculatus Barnes. 

 3G9 Metaptera alata Conrad. 



I'ii In alatus Say. 

 369 fragilis Conrad. 



I it i<> fragilis Say. 



gracilis Barnes. 



369 Plectomerus plicatus Conr. 



Unio plicatus Barnes. 



370 Complanaria complanata 



Conrad. 

 Alasmodonta complanata 

 Barnes. 

 370 costata Conrad. 



Alasmodonta costata Raf. 

 rugosa Bar. 

 370 compressa Conrad. 



Symphynota compressa Lea. 



370 

 370 



370 



370 



370 



370 



370 

 370 



370 



Alasmodonta marginata S. 

 leptodon Raf. 



Unio planus Barnes. 

 tenuissima Lea. 

 Strophites calceolus ( 'onr. 

 Unio cala olus Lea. 

 edentulus Conrad. 

 Alasmodonta edentula Say. 

 Anodonta edt ntula DeKay. 

 Anodonta cataracta Say. 

 A. jluvia tills Lea. 

 declivis Conrad. 



A. plana Lea. 

 Ferussaciana Lea. 

 imbecilis Say. 

 A. incerta Lea. 

 Cyclas similis Say. 



L,ea. — A Synopsis of the Family of Xaiades: by Isaac Lea, 

 Member of the Amer. Phil. Soc., &c. Third edition, greatly 

 enlarged and improved. Philadelphia, 1852. l 



Genus MARGARON. 



Tage. 



19 

 19 

 19 



Subgenus Unio. 



Page. 



19 



(STMPnTXOTE.) 



Unio Nicklinianus Lea. 

 Boykinianus Lea. 

 inflatus Lea. 



Symph. inflata Lea. 



/ '. Alabaraensis Conrad. 

 alatus Say. 



Mya alata Wood. 



Symph. alata Lea. 



19 



19 



Lymnadia alata Sowb. 

 Metaptera alata Stiinp. 

 Unio lagvissimus Lea. 



Symph. Isevissima Lea. 

 U. Isevissima Deshayes. 

 gracilis Barnes. 

 U. planus Barnes. 

 fragilis Swain. 

 Symph. gracilis Lea. 



1 There is also, in the marginal notes, much information regarding the 

 synonymy which is not given in a shape convenient to embody in my ex- 

 tract. As no localities are given, I have taken only those species which 

 are repeated by Mr. Lea in the ^'orth American sections of his geographical 

 tables. Mr. Lea published three editions of this Synopsis, iu the Transac- 

 tions of the Philosophical Society (q. v.), in 1836 and in 1852. The last 

 two now follow. — W. G. B. 



