62 A REVISION OF THE ASTACIDA. 
The centre of distribution of this common Eastern species seems to be 
the Appalachian Mountain system in Pennsylvania, and the Susquehanna 
and Delaware Rivers with their tributary streams. To the northward from 
this region it is found throughout the State of New York, in the basins of 
the Susquehanna, Delaware, Hudson, and St. Lawrence Rivers. I have seen 
Massachusetts specimens from Williamstown, Berkshire Co. (Hudson River 
basin), and from Grafton, Worcester Co. (Blackstone River basin). The 
Grafton specimens were lately collected by Mr. L. W. Sargent, in a clear, 
cold spring. I have been unable to obtain any specimens from Rhode 
Island or Connecticut, but Prof. E. P. Larkin informs me that about forty 
years ago crayfishes (C. Barton?) were not uncommon at Westerly, R. I., on 
the Paweatuck River near the border of Connecticut. Vermont specimens 
have been received from Chittenden Co, on Lake Champlain. According to 
Zadock Thompson, C. Bartonii is very common in many of the small streams 
in the western part of the State. In the State of Maine, it occurs in the 
valleys of the St. John, Kennebec, and Penobscot.* I have myself seen 
specimens from Houlton and Maysville, Aroostook Co. (St. John valley), 
and from Madison, Somerset Co. (Kennebec valley). Other localities in the 
State from which crayfishes (probably C. Bartomi) have been reported are 
the following: Heron Lake (Thoreaut) and Churchill Lake (A. 8. Packard) on 
Allegash River, a tributary of the St. John; Moosehead Lake and Solon in 
the Kennebec valley (fide Wm. Elder); Lobster Pond (see Thoreau, Maine 
Woods, p. 99) and Patten in the Penobscot valley. Professors Verrill and 
Smith, who have explored the neighborhood of Norway, Oxford Co., in the 
Androscoggin valley, are confident that no Cambari are found in that part of 
the State. The easternmost point from which C. Bartoni’ has been received 
is St. John, New Brunswick. 
To the westward, C. Bartonii extends into the valley of the Ohio River 
and its tributaries, in the States of Pennsylvania, West Virginia, Virginia, 
Ohio, Indiana, Kentucky, and Tennessee. 
Southerly its range involves the area drained by the rivers that debouch 
into Chesapeake Bay, in Maryland and Virginia. From North Carolina I 
have seen specimens collected in the mountain region of the western part of 
the State (McDowell Co.), and at Kinston in the eastern part of the State 
* The St. John and Penobscot are connected by a canal from Telos Lake to Webster Pond, and the 
divide between the head-waters of the Penobscot and the Kennebec is so low that it is said that in very wet 
seasous their waters mingle. (See Thoreau, Maine Woods, pp. 36, 250.) 
+ Maine Woods, p. 237. 
