245 



BIBLIOGRAPHY OF 



No. 



21 Unio flexuosus (male) Raf. 



U.foUatus (female) Hild. 



22 fragosus Conrad. 



23 gibbosus Barnes. 



U. nasutus Lam. 

 dilatata Raf. 

 arctior (wMte nacre) Lea. 



24 Hildrethianus Lea. 



25 glans Lea. 



26 gracilis Barnes. 



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. solenijormis hesi. 



32 multiradiatiis Lea. 



U. fasciola Raf. 



33 nodosus Barnes. 



U. metenevra Raf. 



34 nodulatus Raf. 



U. pustidatus Lea. 



35 ovatus Say. 



33 parvus Barnes. 



37 perplexus Lea. 



U. gibbosa Raf. 



38 personatus (fem.,rare) Say. 



U. capillaris (female) Lea. 

 pileus (male) Lea. 



39 phaseolus Hildreth. 



U. planulatus Lea. 

 camelus Lea. 



40 planus Barnes. 



■ U. tenuissimus Lea. 



velum (female) Say. 

 leptodon Raf. 



41 plicatus Say. 



U, costata Raf. 

 raripUcata Lam. 

 undulatus Deshayes. 



No. 



42 TJnio politus Say. 



U. subroiundus Lea. 



43 pustulosus Lea. 



U. verrucosus albus Hildretli. 



44 pyramidatus Lea. 



U. obliqua Lam. 



45 rangianus Lea. 



46 rectus Lam. 



U. praslongus Barnes. 

 latissima Raf. 



47 retusus La?n, 



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. 



inflatus (fern.) Barnes. 



52 solidus Lea. 



U. myteloides Raf. 



53 sulcatus (male) Lea. [Say. 



U. ridibundus (female, rare) 



54 triangularis Barnes. 



U. formosus (male) Lea. 

 triqueter Raf. 



55 trigonis Lea. 



U. rubiginosis (rare) Lea. 



56 tuberculatus Barnes. 



U. tuberculosus Valen. 

 verrucosa Raf. 



57 undatus Barnes. 



U, caridiacea Say. 

 pyramidatus Lea. 



58 undulatus Barnes. 



U. hcros Say. 



midtiplicatus Lea. 



59 ventricosus Barnes. 



U, cardium Raf. 



occidcns (female) Lea. 

 subovatus (male) Lea. 



