Art. VI.] Herrtck-Terry-Herrick, New Mexico Limrds, I2g 
internasals large labials long but narrow, the inferior larger than 
the superior ; symphyseal plate larger than the rostral, followed 
by several plates larger than the gulars, separated by one row 
(or two incomplete rows) of sub-labials from the lower labials ; 
gular region with scales smooth, flat, bicuspid, and strongly im- 
bricated like those of the belly ; ear opening large and nearly 
vertical, protected by three or four small, acute, modified 
scales; back with moderate-sized, keeled, simply-pointed scales 
in parallel rows ; scales of sides ranging obliquely upward ; 
about 45 scales in a dorsal series from cephalic plates to a line 
drawn through the posterior border of the thighs ; transition 
from the lateral to ventral scales gradual; no longitudinal dermal 
folds ; upper surfaces of the limbs with keeled and pointed 
scales, like those of the back ; scales of the posterior surfaces 
of the thighs not enlarged ; upper caudal scales similar to the 
dorsals; about 14 femoral pores; about 8 to 12 dorsal scales 
equal in length to the shielded part of the head. 
Color : pale olivaceous brown ; head darker and uniform ; 
back with narrow whitish bands one on either side and separ- 
ated by a broad area in which is a double row of dark, irregular 
blotches which may be edged with lighter ; sides passing grad- 
ually into the white of the lower aspects ; a dark line from the 
posterior canthus of the eye to upper angle of ear opening and 
thence bordering the lateral light line laterally to the tail; upper 
and lower labials darker than adjacent parts ; limbs marbled 
with dark brown ; tail with obscure dark rings. (The above 
description refers to the female, the male being more highly 
colored.) 
Measurements: Total length, 145 mm.; Length to anus, 
71 mm.; Length of tail, 74 mm.; Snout to ear, 15 mm.; Width 
of head, 14 mm.; Fore leg, 27 mm.; Hind leg, 41 mm.; Base 
of fifth to end of fourth toe, 18 mm. 
This species seems not to be uncommon in the Rio Grande 
valley near Socorro. Collected by John Terry and Harry N. 
Herrick. 
