408 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



Dr. Holbrook thus describes the colors iu life : 



Body pale brown above, with two longitudinal rows of square spots 

 of a dark brown color on the back and on each flank; yellowish-white 

 beneath ; posterior half of the thighs bright yellow, mottled with black. 



The head has a dark brown spot on the top of each orbit and another 

 near the snout, with an indistinct dark line extending from the nostrils 

 to the orbit of the eye. The upper jaw is yellowish-white, spotted 

 with black ; the lower is white, and spotted in like manner. The eyes 

 are large and prominent, the pupil black, with the iris of a golden 

 color ; the tympanum is bronze, with a spot of a darker shade in the 

 middle. A yellow line begins at the eye and runs below the tym- 

 panum to the base of the anterior extremities. 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 lon- 

 gitudinal line, but not raised in a cutaneous fold, as in Bana virescens 

 begins behind each orbit and extends to the posterior extremity of the 

 body. Below this line, on each flank, are two other ro\vs 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 yellowish- 

 brown above, marked with a few very dark blotches 5 their lower sur- 

 face is silver- white; the fingers are four in number, free, of a light brown 

 color on the upper and yellow on the lower surface. The posterior ex- 

 tremities are brownish above, with transverse bands of dark brown con- 

 tinued to the toes. The inferior and posterior i)arts of the thigh are 

 granulated, and of a bright yellow, with black spots. The inferior sur- 

 face of the leg and tarsus is yellow. 



This species is characteristic of the eastern district of l^orth America, 

 as it ceases to be found so soon as the Central Plains are reached. It 

 ranges this entire district, extending as far north as Iludson's Bay. 



In its habits it is not gregarious like the B. virescens virescens, and is 

 even more solitary than the B. v. hrachycephala. It prefers cold springs 

 and streamlets, but is of all our frogs the most frequently seen in the 

 grass. It is the most abundant species in the Alleghany Mountains, 

 j^ext to the B. silvatica, it takes the longest leaps of any of our species* 

 Its note is a low prolonged croak, somewhat resembling the sound pro- 

 duced by tearing some coarse material. 



