Batrachians and Reptiles from Peru. 183 



limb readies the ear or not quite so far ; fifth toe not ex- 

 tending as far as second. Tail nearly twice as long as head 

 and body, tapering, scarcely compressed, scaled like the body, 

 the scales forming rings. Dark olive-brown above, with 

 more or less numerous small yellow spots ; young with a light 

 dorso-lateral streak ; lower parts whitish, tinged with green 

 or blue; anal region, lower surface of thighs, and of base of 

 tail black in the males. 



milliin. 



Total length 187 



Head 17 



Width of head 12 



Body 50 



Fore limb 26 



Hind limb 43 



Tail 120 



A larger specimen, with reproduced tail, measures 85 

 millim. from snout to vent. 



Several specimens from Banos, Cajamarca, 9000 feet. 

 Stenocercus Simonsii, Blgr., described from the Andes of 

 Ecuador, occurs in the same locality. 



Stenocercus chrysopygus. 



Pterygoid teeth. Anterior border of ear denticulated. 

 Upper head-scales smooth or feebly keeled, some of the 

 upraoculars feebly enlarged transversely ; occipital not en- 

 arged ; temporal scales feebly keeled. Side of neck with 

 olds enclosing shallow pockets covered with granular scales ; 

 antehumeral fold much stronger than in the preceding- 

 species, with a serrated edge on its lower half, as in S. cupreus, 

 Blgr. Body depressed. No dorsal crest or denticulation. 

 Dorsal scales rather large, strongly imbricate, sharply keeled, 

 sharply pointed; the keels forming continuous lines, which 

 are parallel or slightly oblique on the posterior part of the 

 back; lateral scales passing gradually into the smaller 

 smooth ventrals ; 54 to 60 scales round the middle of the 

 body. The adpressed hind limb reaches the humeral fold or 

 between it and the ear ; fifth toe not extending as far as 

 second. Tail about twice as long as head and body, tapering, 

 scarcely compressed, scaled like the body, the scales forming 

 rings. Bronzy or greyish brown above, with darker or 

 lighter spots, which may be confluent into longitudinal 

 streaks ; a more or less distinct light dorso-lateral streak 

 constantly present; lower parts whitish, sometimes bluish 



