CATALOGUE FAMILY UXIOXID^E. 



* Uuio crassidens, Lamarck. 



(Trans. Am. Phil. Soc., 2nd Series, Vol. VIII, PL XVI, Fig-. 34. This is Lea's Unie in*- 

 crassatus, which is believed to be equivalent to the crassidens of Lamarck.) 



Al'leghany river, Pennsylvania, to Iowa; to Tennessee, in the Holston, at 

 Knoxville; Etowah, Oostanaula and Ghattahoochee rivers, Georgia; Alabama,. 

 Tennessee, Cahawba and Black Warrior rivers, Alabama. In the last named 

 stream the species is very abundant at Tnscaloosa, and also at the Jefferson coal 

 mines, in Jefferson county. The largest specimens seen came from the Ala- 

 bama, at Selma, and the Ohio, at Cincinnati. 



f- Unio creperu^ Lea. 



(Trans. Am. P. 11. Soc., Vol. VI, PI. X. Fig-. 28.) 

 " Tennessee." There is nothing further on record concerning this form. 



f Unio crudus, Lea. 



(Observations on the Gt-nus Unio, Vol. XIII, PI. IV, Fig-. 10.) 



Clinch river, Tennessee, and Chattooga river, north Georgia. Groups with 

 those forms which are typified by 17. argenteus. 



fUnio ciimberlandicns, Lea. 



(Trans. Am. Phil. Soc., Vol. VI, PI. VII., Fig-. 19.) 



"Cumberland river, Tennessee." This species belongs to the group of 77, 

 iris, which see. 



t Unio cnneolus, Lea. 



(Trans. Am. Phil. Soc.. 2nd Series, Vol. VI II, Pi. VII, Fig-. 3. i 



Powell's, Clinch and Holston rivers, Tennessee. Belongs to the group of 77. 

 bigbyensis. 



*Unio rylindriciis, Say. 



(Am. Jour, of Sci. and Arts, 1st Series, Vol. XIV. PI. I, Figs. 13a, 13'j.J 

 Ohio to Kansas; Tennessee, in the Holston; Alabama, in the Tennessee river. 



near Florence. This is a very persistent type of a group of curiously tubercu- 



late Uniones which includes 77. met,anevrus, 77. wardii, and 77. tnbcroxnx. 

 The species was originally figured in Nicholson's Encyc. American edition, 



Vol. IV, PI. IV, Fig. 3. The figure given in Barnes' paper, and referred to 



above, is very characteristic of the form. 



CATALOGUE 26. 



