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, Grrard, Proc. Acad. Nat. Sci. Phila., VI. 88, 1852. 
Cambarus obesus, Hacen, Il. Cat. Mus. Comp. Zodl., No. III. p. $1, Pl. I. figs. 89-42, Pl. III. fig. 163, PI. 
TX., 1870. 
‘ambarus obesus, Smitu, Rep. U. 8. Comm. Fish and Fisheries for 1872 and 1873, p. 639, 1874. (After 
Hagen. No description.) 
Cambarus obesus, Forses, Bull. Ul. Mus. Nat. Hist., No. I. pp. 5, 19, 1876. 
Cambarus obesus, Buxpy, Proc. Acad. Nat. Sei. Phila.; 1877, p. 171. —Trans. Wis. Acad. Sci., V. 183, 1882. — 
Geol. Wis., Surv. 1873-1879, I. 403, 1883. (No description.) 
Cambarus Diogenes, Faxon, Proc. Amer. Acad. Arts and Sci., XX. p. 144, 1884. 
Caumbarus 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. 8. Nat. Mus.). Ohio: Kelley’s Island, Lake Erie (Peabody 
Acad. Sci.). 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. 
Sci. Phila.). Iowa: Davenport. Missouri: Carroll Co. (Coll. Bost. Soc. Nat. 
Hist.); St. Louis (Coll. Berlin Mus., /este 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 and C. propinguus, 
in the Philadelphia Academy have been transposed accidentally, so that Dr. 
Hagen failed to see the identity of the former and his own C. obesus. Girard’s 
diagnosis is too incomplete to be of much value, although his account of 
