GEOGRAPHICAL DISTRIBUTION. 165 
Table showing our present Knowledge of the Distribution of the North 
American Species of Cambarus and Astacus, arranged according to 
States and Territories. 
1. Matne.—One species: C. Bartonii, in the St. John, Penobscot, and Kennebec River 
systems. For detailed localities, see p. 62. 
New Hampsuire. — None. 
3. Vermont. — One species: C. Bartonii, in affluents of Lake Champlain, at Burlington, 
Colchester, and Shelburne, Chittenden Co. 
4. MASSACHUSETTS. — One species: C. Bartonii, at Williamstown, Berkshire Co., and 
Grafton, Worcester Co. 
RuopE Istanp.— None. According to Prof. E. P- Larkin, Cambari (C. Bartonii 2) 
were common forty years ago at Westerly, in the southwestern part of the 
State, near the Connecticut line. 
6. Connecricut.— None. Prof. S. I. Smith tells me that thirty or forty specimens of 
C. Bartonii were introduced into a brook in New Haven in 1880, but none 
have been seen there since. 
7. New Yorx.—Five species: C. Blandingii, Bartonii (including var. robusta), immunis, 
affinis, and propinquus (including var. obscura). Perhaps also C. virilis. 
C. Blandingii probably comes from the southeastern part of the State. 
C. Bartonti is distributed over the whole of the State. 
C. Bartonii, var. robusta, is found in the St. Lawrence River basin in Chautauqua, 
Monroe, Wayne, St. Lawrence, Hamilton, Herkimer, and Jefferson Counties. 
The particular locality for C. immunis is unknown. 
C. affinis comes from Niagara, in the western part of the State, and probably lives 
also in the southeastern part. 
C. propinguus lives in the waters of the St. Lawrence basin, specimens having 
been received from Grass River, Black Lake, and Canton, in St. Lawrence 
Co.; Lake Ontario; Garrison Creek, Sackett’s Harbor; Oswego; Oneida Lake ; 
Cayuga Lake, Rochester; Niagara; and Forestville, Chautauqua Co. 
C. propinquus, var. obscura, is found in Genesee River, at Rochester. 
C. virilis, Lake George ? (See page 98.) 
8. New Jersey. — Four species: C. Blandingii, Bartonii, Diogenes, and affinis. 
C. Blandingwi is recorded from Essex Co. and from the Delaware River and tribu- 
taries in Mercer Co. 
C. Bartonii, from Essex, Morris, and Mercer Counties. 
C. Diogenes, from the Delaware meadows near Trenton, Mercer Co. 
C. affinis, from Morris, Monmouth, Mercer, and Camden Counties. 
9. PENNSYLVANIA. — Four species: C. Bartonii, Diogenes, affinis, and rusticus. C. Blan- 
dingii, found on the New Jersey side of the Delaware River, doubtless inhabits 
the eastern part of the State. 
C. Bartontvi is found in Bedford, Bradford, Dauphin, Cumberland, Columbia, Lan- 
caster, Philadelphia, Chester, McKean, and Clarion Counties (Delaware, Sus- 
quehanna, and Ohio River systems). 
C. Diogenes, at Derry Station, Westmoreland Co. (Ohio River system). 
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