1212 REPORT OF NATIONAL MUSEUM, 1898. 



of Georgia. It extends north again, occupying East Tennessee, West 

 Virginia, Kentucky, Indiana, the greater i)arts of Illinois and Oliio, and 

 the southern border of Michigan. It includes southern Wisconsin and 

 Minnesota, all of Iowa, and the greater part of Missouri. The Alleghe- 

 nian embraces the States north of the line Just described, excepting the 

 regions pertaining to the Canadian fauna, which I now describe. Tliis 

 includes northern Maine, I^ew Hamjjshire, and Vermont, with the Green 

 Mountains, the Adirondacks, and summits of the Allegheny Mountains 

 as far as Georgia. It includes Canada east and north of the lakes. The 

 Hiidsonian fauna is entirely north of the isothermal ot 50°. It has 

 great extent west of Hudson Bay and is narrowed southeastward to 

 Newfoundland. 



The information as to the distribution of the Batrachia and Keptilia 

 now at hand, points to the following conclusions: The Hudsonian 

 fauna need not be further referred to here, as it is part of the Holarctic 

 region. The Canadian is sustained, as defined by the range of certain 

 Batrachia. The demarkation between the Alleghenian and Carolinian 

 is determined by the northern limit of most of the species common to 

 the Eastern and Austroriparian subregions. An important division is 

 indicated by the boundaries set to the range of certain species by the 

 Allegheny Mountains. This division affects chiefly the Carolinian dis- 

 trict of Verrill, and I therefore propose to abolish that name, and replace 

 it by the two terms CisaUeghenian for the Eastern and Transalleglienian 

 for the Western districts. They are separated from each other by tlie 

 Alleghenian district of the foothills and the Canadian of the summits 

 of the Allegheny Mountains. 



The species which are found over the entire Eastern subregion, and 

 not elsewhere, are the following: 



Amblyatoma jejfersonianuni Green. 



Plethodon cincreus Green. 



Ran.a silvatica, Le Conte. 



liana palustris Le Conte. 



Osceola doliata triangula Boie. 



Natrix fasciata sipedon Linnauis. 



Eutamia sirtalis graminea Cope. 

 The Canadian district is characterized by the following species, which 

 are restricted to it: 



Ainblystoma jeffersoniannm laterale Hallowell. 



(jryrinophilus porphyrificiis Green. 



Desmognathus ochrophwa Cope. 



Desmognatkus nigra Green. 



Bufo lentiginosus foivlerti Putnam. 



Rana cantabrigensis Baird. 



Rana septentrionalis Baird. 

 The list above given as universally distributed in the Eastern sub- 

 region characterizes the Alleghenian district. I know of no species 



