60 MANUAL OF NATURAL HISTORY. 



longitudinal series ; sides rounded ; scales 

 of throat square ; toes 5-5, unequal, clawed ; 

 nostrils in facial ridge ; temples shielded ; 

 femoral pores numerous. 



9. Family. — Iphisas (Iphisidse). Head and chin 



shielded ; ear open, circular ; sides rounded ; 

 scales of back, belly, nape, and throat smooth, 

 broad, 6-sided, transverse, forming a single 

 series on each side of tail, narrow, lanceolate, 

 elongate, regularly keeled, in rings alternat- 

 ing with each other. 



1 0. — Chirocoles (Heterodactylidse). Head-shields 



regular, many-sided ; tongue scaly ; palate 

 toothless ; nostrils lateral ; eyelids distinct, 

 lower transparent ; collar double ; ears hid- 

 den ; body and tail elongate, subcylindrical ; 

 scales of back, sides, and tail slender, 6- 

 sided, lanceolate, keeled, imbricate, in regular 

 rings, those of neighbouring rings alternating 

 with each other, of belly square, smooth, im- 

 bricate, in longitudinal series ; legs 4, short ; 

 femoral pores numerous, in the centre of a scale. 



11. Family. — Ring-tailed Lizards (Cercosauridae). 



Head-shields many-sided; upper eyelids very 

 short ; ears distinct ; collar rather distinct ; 

 body subcylindrical ; sides rounded ; scales of 

 back, sides, and upper part of tail ringed, 

 large, keeled, in longitudinal series ; of belly 

 and tail beneath flat, square ; legs 4, mode- 

 rate ; toes 5-5, unequal, smooth beneath ; 

 tail rounded. 



