10 Proceedings of the Biological Society of Washington. 
lobe long and very narrow, six or seven times as long as wide. Ventral 
scales smooth. 
General color above olive brown, usually finely spotted with pale yel¬ 
lowish on the body, five; black cross bars on each side between the limbs, 
and two on the neck, these interrupted by a yellowish band extending from 
the neck or from above the ear to the groin ; limbs dark brown barred and 
spotted with yellow or pale olive. In the adults there is a short yellow band 
from the posterior corner of the eye to above the ear, and another, poorly 
defined below, from the lower eyelid to the shoulder, these light bands 
usually brighter than the body stripes and with more or less distinct 
black margins on the temporal region. An indistinct yellowish band 
sometimes present on the lower part of the sides. Coloration of the young 
similar to that of the adults except that the markings are more distinct, 
and the lower body stripe is continuous with the lower neck stripe across 
the shoulder, anteriorly extending upon the side of the muzzle and in¬ 
volving the lower eyelid. All markings more obscure in adults but as a 
rule more distinct in the females. 
Habitat.—Fonnd on the lowlands at the base of the Santa Marta 
Mountains, Colombia, from Santa Marta to Fundacion, and in the moun¬ 
tains to 2200 feet (Minca). 
Type-specimen .—of Zoology, University of Michigan, Cat. No. 
45,411; Gaira River at Minca, San Lorenzo, Santa Marta Mountains, 
Colombia (altitude 2200 feet); July 14, 1913; Alexander G. Ruthven’ 
collector. 
Description of type-specimen.—KdxAt male. Head crest long and nar¬ 
row, nearly twice as long as its greatest width, rising on the median line 
from a point above the ears to the anterior region of the neck; upper 
margin not erect, when supported it is on the plane of the orbital angles 
and the highest point is just above the posterior margin of the maxillary 
protuberances; posterior margin rising directly upward to a point a little 
behind the highest point of the upper margin and then backward and 
downward parallel with the dorsal to form the narrow lobe. Entire crest 
pendent upon the side of the neck from near the base, the latter par¬ 
tially erect to highest point. Occipital swellings rounded above and 
meeting in a shallow groove, thus covering the parietal extension of the 
skull so that there is no ridge preceding the crest. Base of crest covered 
with slightly enlarged pointed scales with low keels that become smooth 
toward the lobe; scales of lobe in about 8 rows of 16 or 17, long and very 
narrow, approximately 6 or 7 times as long as broad. Seven upper 
labials and 7 and 8 lower labials to below the center of the eye; two sub¬ 
labials in contact with the labials on one side, on the other the .second 
and third partly separated from the labials by a small plate. Ventral 
scales smooth. A high dorsal crest, as high as the body, and a high 
caudal crest, both covered with large smooth scales. 
Color of body and neck above dull brownish olive, indistinctly and 
finely spotted with dull yellow and with a few irregular black spots (the 
remnants of cross bars); the dorsal crest paler and with a few small black 
