630 NORTH AMERICAN ASTACID#—FAXON,. 
In the second form of the male the first abdominal appendages are 
cleft but a short distance. The terminal part of the appendage is 
stouter than in the first form, aud not horny, and the tips of the rami 
are rather blunt. 
The annulus ventralis of the female is triangular, with a deep trans- 
verse fossa bounded on all sides by a prominert wall which is bituber- 
culate in front. 
Dimensions of a male, form Il: Length, 68™™; cephalothorax, 32™™; 
from end of rostrum to cervical groove, 21™™; from cervical groove to 
posterior margin of carapace, 11™™; width of areola, 2™™; abdomen, 
36™™; chela, 25 by 10.5™™, 
Mill Creek, Wabaunsee County, Kansas; Republican River, near 
Guy, Cheyenne County, Kansas; Sappa Creek, Oberlin, Kansas. 
iy. 
This is the species mentioned, but not named, in my Revision of the 
Astacide, page 94, under C. propinquus. When that work was written 
I had seen but three specimens of this crayfish, all of them second-form 
males, without locality. Collections sent from Kansas by Prof. F. W. 
Cragin supply the first form of the male and the female. In general 
appearance this species nearly resembles C. propinguus, but the fore 
border of the carapace is angulated under the eye, and the sexual ap- 
pendages of the male are quite different, resembling those of C. rusticus 
placidus. The annulus ventralis of the female is different also. 
The tips of the fingers in recent alcoholic specimens are orange col- 
ored, preceded by a dark annular band. 
Cambarus virilis Hag. 
Additional localities: Spencer Creek, Michigan; Barnum Lake, south 
of Battle Creek, Michigan; Bear Creek and Hinkson Creek, Columbia, 
Missouri; West Fork of Black River, Reynolds County, Missouri; trib- 
utaries of Kansas River and Ward’s Creek, Shawnee County, Kansas; 
Wabaunsee County, Kansas; Garden City, Kansas; Sappa Creek, 
Oberlin, Kansas; Osage River, La Cygne, Kansas; Topeka, Kansas; 
Five-mile Creek, tributary of Spring River, Indian Territory (1 mile 
south of Kausas line, near Baxter Springs, Kansas). (U.S. N. M., 
MOC. 7%... -ad U. S.5k'. Ce) 
Together with specimens of C. setosus from wells in Jasper County, 
Missouri, collected by Miss Ruth Hoppin, oecur two very small speci- 
mens of a Cambarus with well developed eyes. They are too young to 
identify with certainty, but are probably C. virilis Hag. The speci- 
mens from the West Fork of Black River, Missouri, differ somewhat 
from the typical C. virilis, agreeing with those described on page 95 of 
my Revision of the Astacidze, from Irondale, Missouri. 
