Avt, VI.3 HERHidK-TERRY'HERRieK, Mextco fJ^ards. tig 
Family. Eublepharidae. 
This family is admittedly nearly related to the geckos, from 
which its members differ in the procoelian vertebrae and single 
parietal bone. The limbs are slender and the claws are retrac- 
tile. The rather few species are widely distributed, the family 
being represented in North and Central America and in Asia. 
The color patterns among those widely separated species is very 
similar. 
Coleonyx variegatus, Bd., has been found in Texas and in 
California and so may be expected to occur in southern New 
Mexico. It may be recognized by the characters of the family 
and the five dark brown bands crossing the yellow of the back. 
The eyelids have a series of pointed scales. Males have six to 
eight preanal pores. 
Family. Iguanidae. 
A very large family restricted to America and the islands 
of the Pacific with the exception of two genera from Madagas- 
car. The species are diurnal, the eyes having round pupils and 
strongly developed lids. The teeth are sub-equal in size and 
usually conical. Femoral pores are usually present in the North 
American forms while often absent in those of South America. 
The form of the head shields is various and affords good generic 
and specific characters. In this paper the shield formed by the 
confluence of a number of plates about the parietal eye is called 
the interparietal and not occipital, as is done in many cases. 
The tympanum is distinct, except in Holbrookia. The species 
are generally insectivorous but many are partial to a varied diet 
and some seem to be strongly vegetarian. Phrynosoma and some 
species of Sceloporus are oviparous. From the excellent 
report of John Van Denburgh on the reptiles of California we 
take the following key to the genera likely to occur within our 
limits. 
Synopsis of Genera of Igiianidae. 
I. A low dorsal crest composed of one longitudinal series of 
enlarged scales, . . . Dipsosaums. 
