~ 
1018 The American Naturalist. [November, 
nent; no external solar tubercle. Skin of upper surfaces of body and 
posterior limb covered with minute tubercles ; no longitudinal dermal 
folds. Males with, females without, external vocal vesicles. Inter- 
ocular width one-half that of each eyelid. Tympanic disk distinct, 
equaling the eye in longest diameter. Head (to posterior border of 
tympanic disk) about one-third length of head and body. End of 
muzzle oval-acuminate, projecting moderately beyond mouth border. 
Nostril opening vertically equidistant between border of orbit and end 
of muzzle. First and second fingers subequal and longer than the 
ourth. 
The color of the upper surfaces is an olive-brown, varying to more 
or less yellowish or blackish. Two light-brown longitudinal bands on 
each side, one commencing at the orbit and extending above the 
tympanum to the sacrum or beyond it; the other commencing at the - 
muzzle, involving the upper lip, and extending to the groin. The 
dark color of the top of the muzzle contrasts strongly with the lighter 
color of the upper lip, at the canthus rostralis. The inferior band is 
bounded below from the axilla to the groin by a wide black band, 
which is made up of several more or less confluent spots. Inferior 
surface of head and body white; the former dusted with blackish in 
both sexes, the latter with or without blackish blotches. Fore limbs 
rown above, black on anterior and posterior faces, and white, with 
blackish blotches, below. Hind limbs brown on upper surfaces, with 
two or three black blotches on the femur and tibia. Remainder of 
hind limb and foot black, with the following exceptions: A light-yellow 
band commences at the groin and extends along the femur, passing 
under the knee to and along the external border of the tibia and the 
anterior face of the foot. It expands here, and extends on the 
anterior surfaces of the first, second, and third digits. A subtriangular 
white blotch occupies the middle of the inferior surface of each femur, 
meets its fellow, and sometimes connects with the white of the belly on 
the middle line. A narrow, horizontal white line, generally broken 
into spots, divides the black of the posterior face of the femur. Inner 
edge of tibia with some white spots. 
Length of head and body, 60 mm. ; width of head at posterior bor- 
ders of tympana, 21.5 mm. ; length of fore limb from axilla, 28 mm. ; 
length of hind limb from vent, 76 mm.; length of hind foot, 39 
mm. ; of tarsus, 15 mm. ; of tibia, 23 mm. 
This frog is not nearly related to any species of the genus, It has 
some points of resemblance to the 2. temporaria, as the short posterior 
_ legs and moderate web; but the interocular space is much narrower, 
f 



