378 CRAYFISHES. 
Austin, Huron Co.; Sand Beach, Huron Co.; Pinnebog River, Port Crescent, 
Huron Co.; Mud Creek, Bay Port, Huron Co.; Black River, near Port Huron, 
Saint Clair Co.; Pine River, West Harrisville, Aleona Co.; Au Sable River, Au 
Sable, Ioseo Co.; Rabbit’s Back Creek, 5 miles above Saint Ignace, Mackinac Co.; 
12 miles from Straits of Mackinac. Minnesota: Deer River, Itasca Co.; Lake 
of the Woods. Nortsa Daxora: Borit’s Ford, Cheyenne River. NEBRASKA: 
Lincoln Creek, York, York Co. Mzssourr: Clinton, Henry Co. (U.S. N. M.). 
Cotorapo: Republican River, Wray, Yuma Co. (M.C. Z.). Mexico: Jimenez, 
State of Chihuahua (Field Mus. Nat. Hist.). 
The Mexican specimens (four females) were collected by Mr. 8. E. Meek 
from deep holes, Rio de los Conchos, about two miles below Jimenez, June 9, 
1901. For the circumstances of their capture, see under Cambarus propinquus, 
page 373, 374. 
CAMBARUS IMMUNIS Hagen. 
Plate 2, 6. 
New localities: — NesrasKa: Norfolk, Madison Co. (U.S. N. M.); Elkhorn 
River, Fremont, Dodge Co. (U. 8. N. M.); Omaha, Douglas Co. (M. C. Z.). 
Missouri: Lake City, Jackson Co. (M. C. Z.). Iowa: West Fork of Des 
Moines River, Spring Vale, Humboldt Co. (M. C. Z.). Micuteaan: Pine River 
near West Harrisville, Aleona Co. (U. S. N. M.); Caseville, Huron Co. (U. S. 
N. M.); mouth of Bunce River, south of Port Huron, St. Clair Co. (U.S. N. M.). 
Inuinors: Wabash Co. (U. 8. N. M.); Indian Creek, Abingdon, Knox Co. (U. S. 
N. M.); Illinois River, Havana, Mason Co. (U.S. N. M.). Onto: Cedar Point, 
and Presque Isle, Toledo, Lucas Co. (U.S. N. M.); Toussaint River, ten miles be- 
low Port Clinton, Ottawa Co. (U. 8S. N. M.). New Yorx: Pond near the 
mouth of Cattaraugus Creek, Chautauqua Co. (U.S. N. M.); Silver Creek, Chau- 
tauqua Co. (U.S. N. M.); Fish Creek, Buffalo, Erie Co. (U.S. N. M.); Stony Is- 
land, Jefferson Co. (U.S. N. M.). Massacuusnrtrs: Pontoosue Lake, Lanes- 
borough, Berkshire Co. (M. C. Z.); Onota Lake, Goodrich Pond and Housatonic 
River, Pittsfield, Berkshire Co. (M. C. Z.); East Washacum Pond, Sterling, Wor- 
cester Co. (M. C. Z.); Blackstone River, Uxbridge, Worcester Co. (M. C. Z.); 
Lake Boone, Stow, Middlesex Co. (Boston Soc. Nat. Hist.) ; Walden Pond, Con- 
cord, Middlesex Co. (M. C. Z.). New Hampsuire: Lake Winnepesaukee 
(U.S. N. M.). 
Cambarus immunis, taken as a whole, has an enormous range, as a common 
species, through the western states, from northern Ohio, through Indiana, 
