Art. VI.] Y{Y.KRicK-T¥,KKY-¥i^KKiCK, New Mexico Lizards. 123 
Color : background above pale gray to yellow ; upper sur- 
face of tail and caudal half of the back marked with transverse 
bands of brown ; anterior part of back with circular spots es- 
pecially laterally : sides in front of hind leg marked with two 
deep black crescentic lines extending from the lateral fold 
toward the median line on a bright yellow field ; upper surfaces 
of limbs with irregular dark markings ; under parts white or 
yellowish ; under surface of tail with transverse bars of black; 
throat and lateral belly patches blue in the male ; a dark streak 
along the caudal aspect of thighs. 
This beautiful species has been collected no further north 
than Socorro where it is not rare. It ranges from northern 
Mexico into the adjacent states. 
Genus. Sceloporus. 
Head and body somewhat depressed, shorter than the tail; 
no dorsal crest ; dorsal scales keeled imbricate, equal ; head 
scales large, especially the interparietal, usually with a definite 
pattern ; no gular fold ; tympanum distinct protected by strong 
teeth ; femoral pores present; superciliaries imbricate. 
Sceloporus Poinsettii, Baird and Girard. 
Plate XV, Figs. 6-8. 
Seloporus poinsettiii, Bd. and Gd., Proc. Acad. Phila. , 
1852 ; U. S. Bound. Surv. ; Sceloporus torquatus, var. C. Bo- 
court', toquatus poinsettii, Cope', torquatus cyanogenys. Cope', 
torquatus, var. poinsettii, Botdenger, Cat. Liz. Brit. Mus. 
Description: Head and body somewhat depressed, very 
broad ; nasal opening near the end of the snout, on the dorsal 
surface and within the canthus nasalis ; upper head plates 
smooth, convex, not imbricated, irregular; interparietal largest; 
frontal divided transversely, caudal portion divided into four or 
more unequal parts, cephalic portion divided longitudinally; 
supra-oculars forming two irregular longitudinal rows, seperated 
from the axial head plates by a continuous series of smaller 
scales ; superciliaries large, strongly imbricated, keeled, separ- 
ated from the supra-occular by an irregular series of granules 
and small scales, middle sub-occulars as long as the remainder of 
