82 Descriptions of New Zluviatile Sliells. , 



The most prominent streams examined were Green Eiver, 

 Barren River, Beaver Creek (a branch of Barren), Nolen Eiver 

 (a branch, I believe, of Salt Eiver), all in Kentucky ; and in 

 Tennessee, the Cumberland Eiver, Cany fork of Cumberland, 

 Collins Eiver, Eock Eiver, Defeated Creek, Battle Creek, 

 Chattanooga Creek, Holston, French Broad, Tennessee Eiver, 

 Mine-lick Creek, and Sequatchee Eiver; while in Georgia, 

 the Ochmulgee, Chattahoochie, Etowah, Coosa, Oostanulla, 

 Connesauga, Sumac Creek, and Eock Creek, were examined, — 

 and in all these States, hundreds of smaller streams, of every 

 grade, tributary to those I have mentioned. 



My means of carriage being limited, but little time was 

 devoted to any one stream, as a few minutes only sufficed to 

 gather two hundred specimens of each species. Generally 

 not more than three species were found in these small 

 streams at any one point, and to gather four or five hundred 

 specimens, twenty minutes was ample time. Every stone in 

 these streams, every piece of floating wood, and, where both 

 were absent, even the muddy bottom, was covered by Melanise, 

 and I only had to strip them off with my hands, and select 

 the full grown ones. In Cany fork, I collected twelve hundred 

 specimens of Melania pemodosa Lea., one hundred of M. alveare 

 Conrad, one hundred M. rohulina Anthony, and some three or 

 four hundred of mixed species, in about one hour's search. I 

 found the specimens everywhere very much coated, generally 

 with ferruginous matter ; but on one occasion, I found every 

 specimen in a small run, enveloped with a thick deposit of 

 calcareous matter, so that they looked like slender hazel nuts — 

 the deposit being probably three or four times the weight of the 

 nucleus, the inclosed Melania. Not a particle of the shell was 

 visible, yet the animal within was alive, and apparently as well 

 circumstanced as a Melania ought to be. I found but few 

 Anculosw. Out of the Tennessee, Cumberland, Cany fork, Se- 

 quatchee, Holston, and other large streams visited, a few were 

 taken. They were particularly abundant in the Green Eiver 



