CATALOGUE FAMILY UN IOXID7E. 



t Unio tener. Lea. 



(Trans. Am. Phil. Sue. 2nd Scries, Vol. VI If., PL X. Fi. 10. > 

 Pigeon river, Tennessee. This form groups with 77 pi//x/maml 77. 



t Unio teniiesseeiisiN, Lea, 



(Trans. Am, Phil. Soc., 2nd Series. Vol. VT1I, PI. X. Fiu. 11.) 

 Stone river, Tennessee a tributary to the Cumberland. 



* Unio tounissimiis. Lea. 



(Trans. Am. Phil. Soc.. Vol. IH. Pi. XI, Fig-. 21, as Sytnplnjnota tcnu i>sima. Lea.) 



Ranges from the Ohio to the Tennessee river, in north Alabama, and west t> 

 the Neosho river, Kansas. 



t Unio tesserulse, Lea. 



(Jour. Acacl. Xat. Sri. Phila., 2nd Series. Vol. VI, PI. XV, Fig. 39. > 

 Nolachucky river, Tennessee. This form is very close to 77. <tc-ucns, Lea. 



* Unio tetralasmns, Say. 



v (Descriptions of the Shells of Xortli America. PI. XXI.ll.) 



Louisiana, Mississippi, and Alabama. Probably synonymous with 77 ctni>- 

 todon, which see. 



I Unio texasensis, Lea. 



(Jour. Acad. Nat. Sci. Phil., Vol. IV, PL LX1, Fijr. 1W.) 



Indian Territory, Red river drainage, to Dewitt county. Texas. This is -,\ 

 member of the parvus group, together with 77. ben III and 77. birirdidnus with 

 both of which it appears to be identical. 



t Unio thorntonii, Lea. 



(Jour. Acad. Nat. Sci. Phila. . 2nd Series, Vol. VI, PL XIV. Fig-. 36.) 

 Tennessee river, near Tuscumbia, Alabama, and Clinch river, Anderson 

 county. Tennessee. See under 77. ni.oorcxidiuix. Lea. 



t Uiiio topekaensis, J^ea. 



(Jour. Aca 1. Nat. Sci. Phi!a.. 2nd Seiies. Vol. VI. PI. XLIX. Fig'. I2.) 

 See under 77. subrostratus, Say, with which this form is synonymous. Orig- 

 inally described from the Kansas river, at Topeka. 



CATALOGUE 44. 



