Art . VI .] Herrick-Terry-Herrick, New Mexico Lzsards. 125 
tion of about 6, 500 feet in the western part of the Magdelena 
mountains and is reported also from Socorro though no speci- 
mens are available from that place. Our specimens were kind- 
ly secured for us by Mr. James Fitch, of Magdalena. This 
species seems to be shy and restricted to rocky places in our 
range. 
Sceloporus Magister, Hailowell. 
Plate XV!, Figs. g-ii. 
Description : Head and body little depressed, sub-cylin- 
drical ; nasal opening nearer the end of the snout than the 
orbit ; upper head plates smooth, often somewhat convex, 
usually slightly imbricated ; interparietal largest; frontal divided 
transversely, two portions sub-equal or caudal part larger ; par- 
ietals and fronto-parietals not separated from the enlarged 
supraoculars ; latter very broad as are the strongly imbricated 
superciliaries : middle sub-occular long, narrow and strongly 
keeled ; rostral plate wider than high ; labials long but very low, 
inferior longer than superior; symphyseal plate large, followed by 
several plates larger than the gulars, separated from the lower 
labials by one to three rows of narrow sub-labials ; gular scales 
smooth, flat, bi-cuspid, strongly imbricated, as are those of 
the belly ; ear opening large and nearly vertical, protected by a 
series of very long accuminate scales, four of which are special- 
ly modified and not keeled projecting backward and slightly 
downward ; back with equal, keeled, strongly pointed scales 
bearing a spine on either side of the point, arranged in nearly 
parallel longitudinal rows; 14 rows of keeled dorsals; scales of 
sides ranging obliquely upward, merging gradually into the 
smooth yentrals. No longitudinal dermal folds ; upper surface 
of the limbs provided with strongly keeled and pointed scales ; 
scales on the poster surface of thighs large, accuminate, strongly 
keeled, and long pointed ; upper caudal scales similar to the 
dorsals but longer pointed ; femoral pores varying from 1 1 
to 1 5 on each side ; five to ten dorsal scales equal in length to 
the shielded part of the head ; number of scales from interpar- 
ietal to line connecting posterior surfaces of the thighs varying 
from 29 to 35 ; males with enlarged post-anal scales. 
