-f8 REPT ILIA SQUAMA TA 



Class REPTILIA 



The reptiles of Western North America belong to two 

 great groups, to which they may be referred by the follow- 

 ing 



SYNOPSIS OF ORDERS 



a. Body not protected by a bony carapace; jaws provided 

 with teeth. (Lizards and snakes) 



Squamata. p. 48. 



a*. Body protected by a bony carapace or shell, covered 

 with horny plates or leathery skin; jaws horny, with- 

 out teeth. (Turtles) 



Testudinata. p. 965. 



Order I. SQUAMATA 



The order Squamata contains the lizards and the snakes, 

 which are regarded as constituting two suborders Sauna 

 and Serpentes. These suborders are very closely allied and 

 for convenience are treated together in the following: 



SYNOPSIS OF FAMILIES 

 a. Limbs well developed, pentadactyle. 

 b. Limbs four, both anterior and posterior present. 

 c. Tips of digits dilated into disks or pads; eye with- 

 out lids. 



Gekkonidae. p. 51. 



c*. Tips of digits not broadened into disks or pads, 

 d. Eye with movable lids. 



e. Pupil elliptical, vertical; skin of top of head 

 soft, free from skull, and covered with minute 

 granules which are not appreciably larger than 



those on the back. 



Eublepharidae. p. 57. 





