1896.] Distribution of Batrachia and Reptilia. 1005 
the foot hills, and the Canadian of the summits of the Alle- 
gheny Mountains. 
The species which are found over the entire eastern sub- 
region, and not elsewhere, are the following: 
Amblystoma jeffersonianum Osceola doliata triangula Boie. 
Natrix fasciata sipedon Linn. 
Plethodon cinereus Green. Eutænia sirtalis graminea 
Rana silvatica Lec. Cope. 
Rana palustris Lec. 
The Canadian district is characterized by the following species, 
which are restricted to it: 
Amblystoma jeffersonianum la- Desmognathus nigra Green. 
terale Hallow. Bufo lentiginosus fowlerii 
Gyrinophilus porphyriticus Putn. 
reen. Rana cantabrigensis Baird. 
Desmognathus ochrophæa Cope. Rana septentrionalis Baird. 
The list above given as universally distributed in the Eastern 
subregion characterizes the Alleghenian district. I know of no 
species that is restricted to it. The genera which do not ex- 
tend north of it are the following: 
BATRACHIA: SERPENTES : 
Chorophilus, Carphophiops, 
yla, Coluber, 
Hemidactylium, Cyclophis, 
Oryptobranchus. Natrix, 
Necturus. Ophibolus, 
Heterodon, 
SAURIA : Ancistrodon. 
Sceloporus, Systrurus, 
Eumeces. Orotalus, : 
The two remaining districts include the large number of 
species which are common to the Eastern and Austroriparian 
. subregions enumerated under the latter head. The Cisalle- 
ghenian is further characterized by the following: 
