334 ORTMANN— THE ALLEGHENIAN DIVIDE. [April i8, 



Cambarus propinquus sanhorni Fax. As has been shown in my 

 previous paper, this species takes the place of C. obscurus as the 

 river-species below the lower boundary of the range of the latter. 

 In the Ohio proper, C. propinquus sanborni has been found at 

 Parkersburg, Wood Co., and at Ravenswood, Jackson Co., W. Va. 

 It is also present in the tributaries of the Ohio in this region. An 

 additional locality in the drainage of Middle Island Creek is McKim 

 Creek, Union Mills, Pleasants Co., W. Va. It is in the Little 

 Kanawha drainage in North Fork Hughes River, Cornwallis, Ritchie 

 Co., and in the Little Kanawha River, Burnsville, Braxton Co., W. 

 Va.^ From the Kanawha drainage I have it from Elk River, Clay, 

 Clay Co., and I collected it also in Mud River, Milton, Cabell Co., 

 which is in the Guyandot drainage. Although I did not get it in the 

 Big Sandy, it is surely there, for its type locality (according to 

 Faxon) is Smoky Creek, Carter Co., Ky. (I could not locate this 

 creek, but a place called Smoky Valley is in western Carter Co., and 

 is in the Tygart Creek drainage ; Little Sandy and Tygart Creek fall 

 into the Ohio below the mouth of the Big Sandy.) Beyond this, 

 this species disappears, and its place is taken by the next, but I have 

 ascertained this only in Rowan and Fleming Cos., Ky. 



Cambarus riisticus Gir. This is the river-species of Licking 

 River, which flows into the Ohio below Cincinnati. The old record 

 for this species, Cincinnati, would thus be confirmed. I found this 

 species in Licking River proper at Farmer, Rowan Co., and in the 

 tributaries. Triplet Creek, Morehead, Rowan Co., and Fleming 

 Creek, Pleasant Valley, Nicholas Co., Ky. 



Cambarus spinosus Bund. This is the representative species of 

 C. rusticus in the upper Tennessee drainage, and I found it in Clinch 

 River at Richland and Raven, Tazewell Co., Va. From this center 

 of distribution it has crossed over into the Gulf and Atlantic drain- 

 ages in Georgia and South Carolina, but this does not concern us here. 



In a general way, these river crayfishes show the same geograph- 

 ical features as the bulk of the Ohio River shell fauna. The species 



^ These two localities are interesting, for they approach closely localities 

 in the West Fork River, at Lynch Mines, Harrison Co., and Weston, Lewis 

 Co., where C. obscurus is found. 



