M:s MOFNKS ACADEMY <>F SCiKNCE. 41 



*tlnio parvns. names. 



( lour. Acii'l. Nsit.Sci. Phil. .Vol. IV., PI. XXIX, Fijrs. l<r.'. Kr.'a; soft |>;. 

 hcr<- fijnired.) 



Western New York to Tusenmbia, Alabama; to Jackson, MissMsijtfH: 

 <lian Territory and Kansas: to Lake Pepin. Mississippi river. This species is 

 ihc type of a -group. t\vo members ol' which are / '. rrfmiwcUii, and 7..". imulitN. 



f Unio patnius, Lt^a. 



(Trans. Am. Phil. Sot-., Vol. Ill, PI. XII 4 Fijf*a0.f il. ; 



Alh'U'liany, Ohio and Scioto rivers: Holstoii river, Tennessee. Tliis form i> 

 identical with T. c///r.v, Lamarck, \vliicli see for further syn.-momy. 



I Unio pattinoides, Lea. 



(Observations on the Genus Unio, Vol. XIII, PI. VJJ1, f%. ::;.. :.< 1 



Clinch and Holston rfve"rs, east Tennessee. This form is a member of the 

 group, and is close to U. nuiiHlu*, Lea. 



\ Unio pealii, Lea. 



(Oliscrvations-ftn the Genus Unio, Vol. XIII, PI, VII i, Fi^. ^;!j 



Kansas river, at Topeka. Belongs with /". eiiipsis, from which it is quite 

 eiearly wot*dis-tinct. 



f Unio pectorosus, Conrad. 



(New Fresh Water Shells of the United States. Pl."Vl,-Flv*.)' ' 

 A species of the owitns group, frolii the Klk and Tennessee rivers, Tennessee. 



f Unio perdix, Lea. 



(Trans. Am. Phil. Soc., Vol. V, PI. XI, FIgi'Slv>- ' .^IHI->J >.ln ! . 

 Harpeth and Elk rivers, Tennessee. This rnio is a member of the I'ujinncn- 

 Uniix group, and is very close* to -P. piotus and U. rnenltliituix. whicli see. 



Unio pornodosns, Lea. 



(Trans. Am. Phil. i<oc.. :.jid Seriee. l^Ql. X, PI. IIJ. Fi^. 8. 



From western North Carolina. This shell gi'oups with r. i>n1nl<,*us, and 

 has many points of resemblance to T<T;>coopciri<m'ii8^ Lea. 





f Unio porplexus. Lea. 



<Trsms. Am. 1 Phil. Sot-.. V)|. IV, PI. XVII. Fi-r. [*-.) ' - 



Ohio and Indiana to the Clinch, Ilolston and Tennessee rivers. This is rhe 

 type of a considerable group, most forms of which are probably synonymous, 'HI- 



CATALOGUE 33. 



