246 



BIBLIOGRAPHY OF 



No. 



21 Unio flexuosus (male) Raf. 



U.foliatus (female) Hild. 



22 fragosus Conrad. 



23 gibbosus Barnes. 



U. nasutus Lam. 

 dilutata Raf. 

 arctior (white nacre) Lea. 



24 Hildrethianus Lea. 



25 glans Lea. 



26 gracilis Dames. 



Symphonata gracilis Lea. 



27 iris Lea. 



U. subrostratus Say. 



28 irroratus Lea. 



U. stegaria Raf. 



29 laevissimus Lea. 



Symph. lavissima Lea. 



30 lapillus Say. 



U.fahalis Lea. 



31 monodontus Say. 



U. soh n if< i rm is Lea. 



32 multiradiatus Lea. 



U.fasciola Raf. 



33 nodosus Barnes. 



U. metenevra Raf. 



34 nodulatus Raf. 



U. pustulatus Lea. 



35 ovatus Say. 



36 parvus Barnes. 



37 perplexus Lea. 



U. gibbosa Raf. 



38 personatus (fem.,rare) Say. 



U. capillaris (female) Lea. 

 pileus (male) Lea. 



39 phaseolus Hildreth. 



I '. planulatus Lea. 

 camelus Lea. 



40 planus Barnes. 



I '. 1 1 nuissimus Lea. 

 rilmn (female) Say. 

 bpiodon Raf. 



41 plicatus Say. 



U. costata Raf. 

 rariplicata Lam. 

 undulutus Deshayes. 



No. 



42 Unio politus Sag. 



U. subrotundus Lea. 



43 pustulosus Lea. 



U. verrucosus albus Hildreth. 



44 pyramidatus Lea. 



U. obliqua Lam. 



45 rangianus Zea. 



46 rectus Lam. 



U. prselongus Barnes. 

 latissima Raf. 



47 retusus Lam. 



U. torsa Raf. 



48 rugosus Barnes. 



U. quadrula Raf. 

 lachrymosus Lea. 

 asperrimus Lea. 



49 Sayii (rare) Ward. 



50 securis Lea. 



U. depressa Raf. 



51 siliquoideus Barnes. 



U. luteolus Lam. 



iiijlatus (fem.) Barnes. 



52 solidus I '.• a. 



I'. myteloides Raf. 



53 sulcatus (male) Lea. [Say. 



U. ridibundus (female, rare) 



54 triangularis Barnes. 



U. formosus (male) Lea. 

 trirjueter Raf. 



55 trigonis Lea. 



U. ruhiginosis (rare) Lea. 



56 tuberculatus Barnes. 



U. tuberculosas Valen. 

 verrucosa Raf. 



57 undatus Barnes. 



U. caridiacea Say. 

 pyramidatus Lea. 



58 undulatus Barnes. 



U. In r os Say. 



muitiplicatus Lea. 



59 ventricosus Barnes. 



[ '. iitrdium Raf. 



occidens (female) Lea. 

 suboyatus (male) Lea. 



