80 
BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL, 2. NO. 1. 
COLOR. 
The color of this species is extremely variable. Usually the 
upper surface has a ground color of ashy gray with a faint green- 
ish hue or brown. The whole upper surface of body and limbs 
is more or less overrun with small scattered elongate or rounded 
warts of irregular size. The back is covered with a varying num- 
ber of black spots, all generally margined with lighter. Between 
the eyes is a triangle nearly equilateral, its sides sHghtly concave, 
and its base connecting the edges of the upper eyelids. This tri- 
angle is relatively constant and characteristic, though so^ pale and 
indistinct in some as to be barely discernible. 
The upper jaw is black or dark brown, with four vertical pale 
lines on each side. From the eye to arm is a pale white line, usually 
quite easily seen. Dorsal to this line extending nearly to the in- 
sertion of the fore leg is an elongate black mark, and beneath the 
line is another running parallel to the posterior one and extending 
from the sides of the lower jaw to the lower part of the insertion 
of the arm. Posterior to the insertion of the arm is a large dark 
oblique white margined spot on the side O'f- the body. Pos- 
terior to this, and more dorsal, is another black spot, also mar- 
gined with white and running obliquely backward. 
The median dorsal part is frequently occupied by a longi- 
tudinal red or green band, these bands being frequently bordered 
on either side by obscure black spots. The green and red bands 
are, where present, extremely variable from a pale inconspicuous 
green or red line to a prominent and distinct band of either color. 
Very rarely are both the green and red color present in the same 
individual. In the one hundred specimens examined I found but 
one case. The bands of red or green are either continuous or in- 
terrupted. Where very pronounced the band is generally contin- 
uous, and when not is generally interrupted. The colors have 
apparently no correlation with sex or age, as the table will illus- 
trate. The one hundred individuals studied offered thirty-five 
individuals in which the colored bands were present. 
