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 

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

 belonging to the lowlands. 



26. Cambarus Diogenes. 



Cambarus Diogenes, Gibabd, Proc. dead, Nat Sei Phila.,V] 88, 1852. 



Cambarus obesus, Eagen, 111. Cat. Mus. Comp. Zool., No. III. p. SI. PL I. figs. 39-12, PI. III. fig. 1G3, PI. 



1Y, 1870. 

 Cambarus obesus, Smith, Rep. U. S. Coram. Fish and Fisheries for 1872 and 1S73, p. 039, 1^74 (After 



Hagen. No description.) 

 Cambarus obesus, Forbes, Bull. 111. Mus. Nat. Hist., No. I. pp. 5, 19, 1876. 

 Cambarus obesus, Bi ndy, Proc. kcad Nat. Sei. Phila., 1877, p. 171- — Trans. Wis. Acad. Sci.,V. 183, L882 — 



Geol. Wis., Sun 1873-1879, I- t03, L883. (No description.) 

 us Diogenes, Faxon, Proc. \ukt. Acad. Ails ami Sri., XX. p. 144, 1884. 



, Diogenes, var. Ludoviciana, Faxon, Proc. Amer. Acad. Arts and Sei., XX. p. 144, 1884. 



Known Localities. — 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.; 

 Deer Park, Garrett Co. (Coll. P. R. Uhler). 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. Sei.). Indiana : Long Lake, Kendallville, 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. Koons). Michigan: Detroit. Wisconsin: tributaries of Pecatonica 

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

 Sei. Phila,). Iowa : Davenport. Missouri : Carroll Co. (Coll. Bost. Soc. Nat. 

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

 rado: Clear Lake. Wyoming : Cheyenne. Arkansas. Kentucky : near Louis- 

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

 Lawrence Co. Louisiana: New Orleans. 



The labels of specimens, probably types, of C. Diogenes ami ('. propinquus, 

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

 Hagen failed to see the identity of the former ami his own O.obesus. Guard's 

 diagnosis is too incomplete In he of much value, although his account of 



