1908 ] 
Notes on the Life-Zones 
19 
BcUrachians: 
Carolina Tree-frog (Hyla cinerea) . 
Squirrel Tree-frog (Hyla squirella) . 
Pine-woods Tree-frog (Hyla femoralis) . 
Dwarf Toad (Bufo quercicus) . 
Narrow-mouth Toad (Engystoma carolinense) . 
Margined Salamander (Stereochilus marginatus) . 
Dwarf Salamander (Manculus quadridigitatus). 
Mole Salamander (Amblystoma talpoideum). 
Ditch Eel (Amphiuma means). 
Southern Water-dog (Necturus punctatus). 
Mud Eel (Siren lacertina) . 
In outlining this map the most important step has been to 
locate the line separating the lower and upper austral zones. In 
placing this line where we have it, we have been influenced by 
the following data: The Dismal Swamp region, which lies partly 
in the northern end of Camden county, is known to have decided- 
ly lower austral affinities, so that our line would seem to start 
west of this swamp. The only section in the northeast part of 
the state which has enough records to furnish a reliable guide is 
the southeastern part of Bertie county, where Sans Souci and 
I Avoca have on record five distinctively lower austral forms, to two 
upper austral. Meagre data from Jackson (Northampton County) 
and Tarboro (Edgecombe Co.) indicate a mixed fauna at both 
I places, and therefore we have run the line between them. Ral- 
eigh is really the strongest point in locating this line. Abundant 
data indicates that the fauna of Raleigh and vicinity is thoroughly 
mixed, with no decided preponderance in either direction, — 
therefore we have run the line directly through Raleigh. This 
gives practically a straight line from Raleigh toward Suffolk, Va., 
until the state line is reached at Chowan River. 
West of Raleigh and east of the mountains our data is scant. 
Cary, with one decidedly upper austral form (Chipmunk) which 
does not occur at Raleigh, finds a place above the line, while 
Apex with one lower austral form is below it. It is interesting to 
note here that the Chipmunk recorded from Cary was taken not 
' more than seven miles from Raleigh but has never been taken actual- 
