SQUAMATA 



e'. — Pupil round} top of head with plates or scales, 

 not movable, 

 f. — A series of femoral pores, 

 g. — Lateral scales not abruptly smaller than ven- 

 trals; ventrals in numerous series j tongue not 

 deeply divided at tip. 



Iguanidas. — p. 61. 



g' — Lateral scales granular like dorsals, abruptly 

 smaller than ventrals j ventrals in eight longi- 

 tudinal series; tongue ending in two long 

 slender points. 



Teiidae.— p. +89. 

 f*. — No femoral pores. 



gg. — Lateral scales very much smaller than dor- 

 sals and ventrals (usually hidden by a 

 lateral fold) ; dorsal scales keeled. 

 Anguidae. — p. 433. 



gg'. — Lateral scales not much smaller than dorsals 



and ventrals; no lateral fold; scales smooth. 



h. — Scales on body flat, thin, and imbricate. 



Scincidae. — p. 577. 

 h*. — Scales on body wart-like tubercles, usually 

 bony, separated by narrow granular spaces. 

 Helodermatidae. — p. 470. 



d'. — Eye without lids; pupils elliptical. 



Xantusiidae. — p. 476. 

 b'. — Limbs two, anterior pair only present. 



Bipedidae. — p. 597. 



a. — ^Limbs absent (or rudimentary in Boidse). 

 bb. — Tail cylindrical or conical, not oar-shaped. 



cc. — Ventral scales less than twice as broad as dorsals, 

 dd. — Plates on top of head much larger than those 

 on body; anus bordered in front by several 

 scales; no spine at end of tail. 



Anniellidae. — p. 464. 



