ASTACID.E. 99 



DISTRIBUTION OF THE SPECIES OF CAMBARUS 



IN EVEKY STATE OR TERRITORY ACCORDING TO LOCALITIES YET ASCERTAINED. 



1. Maine. — None. 



2. New Hampshire. — None. 



3. Vermont. — C. Barton/)', Burlington, Shelburne, Colchester, Chit- 

 tenden County, in affluents of Lake Champlain. 



4. Massachusetts. — None. I am told by Mr. S. H. Scudder that 

 fresh-water crabs (C. Bartomi) have been collected in the western parts, 

 at Williamstown. Lewis R. Gibbes cites, on the authority of Dr. Gould, 

 C. Biirtoiili from Massachusetts. 



5. Connecticut. — None. 



6. Rhode Island. — None. 



7. New York. — Seven species: C. acutus var. B., C. affinis, C. pro- 

 pinquus, C. obscurus, C Bartomi, C robustus, C. obesus. 



C. Bartomi lives in the western part of the State, on the Hudson 

 River and its affluents ; in the southern, at Newburg and Fishkill ; in 

 the northeastern, along Lake Champlain, and particularly at Elizabeth- 

 town. Essex County ; also in the Tioga affluent of the Susquehanna at 

 Berkshire, Tioga County. Rafinesque also mentions Lake George, Sar- 

 atoga, Utica, and Oswego, but perhaps the latter locality belongs to C. 

 proprinquus. 



C prepinquus lives in the northern part of the State, in Lake Ontario, 

 in its affluents, the Genesee River at Rochester, Garrison Creek near 

 Oswego, Lake Oneida, Four-Mile Creek near Sackett's Harbor, and in 

 Grass River, a branch of the St. Lawrence River. 



C. obscurus and C. robustus also live in the Genesee River at Roches- 

 ter, C. obesus lives in Garrison Creek. 



C. affinis lives in the western part, at Niagara. For C. acutus the 

 locality is not given. 



Our knowledge of the great State of New York is mostly confined to 

 the northern and the western border. The remainder, with the excep- 

 tion of a small portion of the southern limits, is unknown. 



8. New Jersey. — Three species : C. acutus var. B., C. affinis, C. Bartomi. 

 The first species is from Essex; of the second the locality is not 



given ; the third is from Schooley's Mountain. Morris. 



Of the State of New' Jersey our knowledge is limited to two points 

 in two counties very near New York, and to the rivers which empty 

 into the outlet of the Hudson River. 



9. Del aw are. — None . 



