72 



line, are sucli as are common in other parts of New England, while 

 those found to the westward of it, are generally different, corres 

 ponding, for the most part, with the fauna of Western New York. 

 Of the reptiles foiind in the western part of Vermont, which are 

 not, so far as I am informed, found to the eastward of the Green 

 Mountains, may be mentioned the E-niys geographica^ the Trion- 

 yx ferox, the liana horiconenses and the Menobranchus ma- 

 cidatus. Our Ribbon Snake, if identical, as it probably is, with 

 the Coluber Sauriter of the eastern part of New England, often 

 far exceeds in length the measurement of this species usually giv 

 en in books. 



But the fishes on the two sides of this dividing line differ even 

 more than the reptiles. The whole number of species of Vermont 

 fishes is about fifty. Of these more than forty species are pretty 

 well determined ; and of those determined, not more than four or 

 five are common to the two sides of the Green Mountains. There 

 are perhaps seven or eight species, which are found on the east 

 side of the mountains and not on the west, and at least thirty spe 

 cies on the west side, which are not found in any Vermont waters 

 on the east side : and more than twenty of these thirty species 

 are not, so far as I am informed, found in any other New Eng 

 land waters. Of these twenty or more species not found to the 

 southeastward of western Vermont, six belonging to the Perch 

 family, four to the Salmon family, three to the Herring family 

 two to the Pike family, tivoor more to the Carp family, one Cottus 

 one Corvina, one Catfish, one Eel, and one Sturgeon. 



The Mollusca of Vermont have, by the labors of Prof. G. W. 

 Benedict and Prof. C. B. Adams, been pretty thoroughly examin 

 ed; but hardly any attention has been given to the other classes 

 of our invertebrated animals; There are I believe, a few species 

 of fresh water Mollusks, in Lake Champlain, which have been 

 found nowhere else, and a considerable number of species which 

 are not found to the eastward of the Green Mountains. One of 

 these last, is the Limnsea nugasoma ; and the only known locality 

 of this species in Vermont is in Burlington, where they have some 

 times been found plentifully in a few small creeks in low stages of 

 the water, but from which it is feared they will soon be extermina 

 ted by the drying up of the creeks, in consequence of their having 

 become exposed to the sun and winds by the removal of the forest 

 trees and shrubbery which protected them. 



