96 RANA PALUSTRIS. 
The superior surface of the body is pale brown, almost covered by oblong 
square spots of very dark brown, arranged symmetrically in two lines along the 
back: we sometimes find two of these squares confluent. A bright yellow longi- 
tudinal line, but not raised in a cutaneous fold, as in Rana halecina, begins behind 
each orbit, and extends to the posterior extremity of the body; below this line, on 
each flank, are two other rows of square brown spots, the superior row beginning 
on a level with and behind the tympanum; the inferior row is less regular, 
frequently consisting only of small spots, disposed without order. The inferior 
surface of the neck and abdomen is yellowish-white, except at the posterior 
part, where the yellow is more decided. 
The anterior extremities are short, yellowish-brown above, marked with a few 
very dark blotches; their lower surface is silver-white; the fingers are four in 
number, free, of a light brown colour on the upper, and yellow on the lower surface. 
The posterior extremities are very long, brownish above, with transverse bands of 
dark brown continued to the toes; the inferior and posterior parts of the thigh are 
granulated, and of a bright yellow, with black spots; the inferior surface of the 
leg and tarsus is yellow. The toes are palmated, but the web does not reach 
their tips, and the fourth toe is longest. 
Divensions. Length of the body and head, 2? inches; of the thigh, 1; inches; 
of the leg, 14 inches; of the tarsus and toes, 27> inches. 
GeocraruicaL Disrrisution. This animal is found in the Atlantic states from 
Maine to Virginia, which state must be considered for the present its southern 
limit. Leconte has observed that it is the only one of our frogs that frequents 
the neighbourhood of salt marshes, hence its name palustris. It is however by 
no means confined to such situations, being common throughout the interior 
of the northern and eastern states. I have observed it among the White Moun- 
tains of New Hampshire, in Massachusetts and Vermont, and in the valley of 
the Connecticut. 
