neio Reptiles from the Andes. 421 



rather large, strongly keeled and mucronate, the keels 

 directed obliquely towards the vertebral line ; ventral scales 

 smaller, also strongly keeled ; 4i) scales round the middle ot" 

 the bod3^ The adpressed hind limb reaches the eye. Tail 

 cylindrical, without crest, covered with unequal-sized scales, 

 the largest of which are smaller than the dorsals. Dark 

 brown above and on the throat ; small black spots on the 

 back and on the hind limbs ; a large, black, light-edged spot 

 at the angle of the mouth ; gular fold white in front, black 

 behind ; fore liml) pale grey^ with black bars ; belly 

 brownish. 



mm. 



Total length 260 



Head 19 



Width of head 18 



Body 56 



Fore limb , 43 



Hind limb 60 



Tail 185 



A single specimen from Alpayaca, Rio Pastaza, E. Ecuador, 

 3600 feet, from the collection of Mr. M. G. Palmer. 



Ptychoglossus hrevi frontalis. 



Head short ; snout subtruncate. Frontonasal broader than 

 long ; prasfrontals forming a short suture ; frontal not longer 

 than broad, but slightly longer than the frontonasal or the 

 frontoparietals ; interparietal nearly as broad as the parietals ; 

 no occipitals ; a small loreal ; seven upper labials, third very 

 long; hve lower labials ; chin-shields very large, one anterior 

 and three pairs, the first two pairs in contact on the median 

 line. Gular scales squarish, in 7 transverse series ; collar 

 formed of 7 shields. Dorsal scales in 24 longitudinal and 

 33 transverse series; ventrals a little longer than broad, in 8 

 longitudinal and 18 transverse series. Four prgeanals, median 

 pair the larger. The hind limb reaches the wrist, the fore 

 limb between the ear and the eye; scales on limbs smooth. 

 14 femoral pores on eacii side. Brown above, mottled with 

 black ; an interrupted yellowish streak on each side, from 

 above the eye to the tail ; below it a black streak, broken up 

 into spots towards the middle of the body ; lower parts white. 



mm. 



Head 12 



AVidth of head 10 



From end of snout to fore limb 22 



„ „ vent 65 



Fore limb 15 



Hind limb 24 



