CAMBARUS. 71 



by the apposition of the branchio-cardiac lines. The few (four) specimens 

 which I have seen come from the Appalachian Mountain region of Virginia 

 and West Virginia. According to Mr. Uhler, it makes mud chimneys like 

 (7. Diogenes, which it seems to represent in the mountain regions, C Diogenes 

 belonging to the lowlands. 



26. Cambams Diogenes. 



Cambarus Diogenes, Girard, Proc. Acad. Nat. Sci. Pliila., VI. 88, 1852. 



Cambarus obesiis, Hagen, 111. Cat. Mus. Comp. Zo6l., No. III. p. 81, PI. I. figs. 39-42, PI. III. fig. 103, PI. 



IX., 1870. 

 Cambarun obesas. Smith, Hep. U. S. Comm. Fish and Fisbcrics for 1872 and 1S73, p. 639, 187-1. (After 



Hagen. No description.) 

 Cambarus obes/is, Forbes, Bull. 111. Mus. Nat. Hist., No. I. pp. 5, 19, 1876. 

 Cambarus obesus, Bdndy, Proc. Acad. Nat. Sci. Pliila., 1877, p. 171. —Trans. Wis. Acad. Sci., V. 183, 1882. — 



Gcol. Wis., Surv. 1873-1879, I. 403, 1883. (No description.) 

 Cambarus JHoyenes, Faxon, Proc. Amer. Acad. Arts and Sci., XX. p. 144, 1884. 

 Cambarus Diogeties, var. Ludoviciana, Faxon, Proc. Amer. Acad. Arts aud Sci., XX. p. 144, 1884. 



Enoivn Loculilies. — New Jersey : Mercer Co. Pennsylvania : Derry Sta- 

 tion, Westmoreland Co. Maryland : Baltimore Co. ; St. Mary Co. ; Caroline 

 Co. (Coll. P. R. Uhler) ; Dorchester Co. (Coll. P. R. Uhler) ; Worcester Co.; 

 3r| .=^iier JEarlCy-Garrett-Co^ColL-P.^.-Uh4ei-). District of Columbia : near Wash- 

 ington. Virginia : Alexandria Co. ; Accomack Co. ; Northampton Co. ; Fred- 

 ericksburg ; Petersburg. North Carolina: Wilmington (Coll. U. S. Nat Mus.); 

 Kinston (Coll. U. S. Nat. Mus.). Ohio : Kelley's Island, Lake Erie (Peabody 

 Acad. Sci.). Indiana : Long Lake, Keudallville, Noble Co. (Bundy ) ; Mechanics- 

 burg, Henry Co. (Bundy) ; Knox Co. (Coll. U. S. Nat. Mus.). Illinois : Lawn 

 Ridge ; Evanston ; Belleville ; Decatur ; Chicago ; Abingdon (Coll. L. A. Lee 

 and B. F. Koous). Michigan : Detroit. Wisconsin : tributaries of Pecatonica 

 River, Green Co. ; Applcton (Coll. Butler Univ.) ; Racine (Coll. Acad. Nat. 

 Sci. Pliila.). Iowa : Davenport. Missouri : Carroll Co. (Coll. Bost. Sec. Nat. 

 Hist.) ; St. Louis (Coll. Berlin Mus., teste Hagen). Kansas: Leavenworth. Colo- 

 rado : Clear Lake. Wyoming : Cheyenne. Arkansas. Kentucky : near Loui.s- 

 ville ? Mill Branch, near Bee Spring, Edmonson Co. ? Mississippi : Monticello, 

 Lawrence Co. Louisiana: New Orleans. 



The labels of specimens, probably t3pes, of C. Diogenes and C. propinqims, 

 in the Philadelphia Academy have been tran.sposed accidentally, so that Dr. 

 Hagen failed to see the identity of the former and his own C ohcsus. Girard's 

 diagnosis is too incomplete to bo of much value, although his account of 



