v>4 CATALOGUE FAMILY UNIONISE. 



mous, was described from the Ohio river, at Cincinnati. No other locality has 

 been reported. 



f Unio eirculiis, Lea. 



(Trans. Am. Phil. Soc., Vol. Ill, PI. IX, Fig 1 . 14.) 



Kitchie county, West Virginia, to Indiana; south to Tennessee, in the Hols- 

 ton at Kuoxville. This species is the type of a group which includes J\ uni- 

 eoJor, IT. cashmeus, and IT. lens, all of which are believed to be synonymous. 



| Unio cirriiiiiactns, Lea. 



(Observations on the CJenus Unio. Vol. XIII. PI. IV, Fig. 11.) 



Tennessee and Holston rivers. A member of the thonttG'nil group of 

 1'nioiies. 



t Unio clarkiamis, Lea. 



(Trans. Am Phil. Soe., 2nd Ser., Vol. X, PI. XXI. Fig. 30.) 



u Willianisport, Tennessee," and in Chattooga river, north-west (Jeorgia. 

 I', (jerhardtil is probably synonymous. Tlie species is a member of the group 

 of 77. ligamentinus. 



t Unio clavus, Lam. 



(Trans. Am. Phil. Soc., Vol. Ill, PI. XII, Fig. 20, as U. patulus, Lea.) 

 This species has a very wide distribution east of the Mississippi river, ranging 

 from Illinois to western Pennsylvania, and south to Alabama and Tennessee. 

 It is a very variable form and typifies a group which includes some being 

 synonymous 77. decisus, 77. concolor, U. consanguineus. 77. pallidofulvus, 

 U. interventus, 77. crebrivittatus, 77. chdttanoogaensis, 77. anaticulus and 

 77. curtus. Unio patulus, Lea, is certainly synonymous, and reference has 

 been given to Lea's figure of that species as a good illustration of U. clarux as 

 usually received from correspondents. 



f Unio elinclicnsis. Lea, 



(Jour. Acad. Nat. Sei. Cnd Scries Vol. VI, PI. XXXVII, Fig. 91.) 

 Clinch, French Broad, Holston and Duck- rivers. Tennessee. It forms a mem- 

 ber of the cuneolus groun. 



t Unio cordiHMis, Hildreth. 



(Trans. Am. Phil. Sot;., Vol. VI, Pi. V. Fig. !;>.) 



Ranges from western New York to Kansas: south to the Holston river. Ten- 

 nessee. It is frequently confused with flattened forms of riihiyiruHstiK, by col- 

 1 '-tors. A variety from the Ohio river was described as / '. ^ould'uinu*. Ward. 



<AT A LOG UK 16. 



