Tieptiles frum Peru and Bolivia. 5^7 



between the labials and the suhocular ; anterior border of ear 

 granular. ISides of neck granular, strongly folded. Dorsal 

 scales rather small, rhomboidal, not longer than broad, 

 weakly keeled, feebly imbricate ; lateral scales a little 

 smaller, smooth or feebly keeled ; ventral scales a little larger 

 than dorsal?, strongly imbricate, smooth, rounded ; 60 to 70 

 scales round the middle of the body. The adpressed hind 

 limb reaches the axil or the shoulder ; hinder side of thighs 

 uniformly granular. Male with 6 or 7 anal pores. Tail 

 once and one fourth to once and a half as long as head and 

 body ; scales about as large as those on the body. Coloration 

 very variable — green, grey, or brownish above, spotted or 

 marbled with blackish, or with six regular longitudinal series 

 of black spots ; lower parts whitish, spotted or marbled with 

 olive-grey. 



millim. 



Total length 196 



Head 19 



Widtli of head 15 



Body 67 



Yore limb 28 



Hind limb 46 



Tail 110 



Several specimens from Caylloma and Sum bay, 11,300 to 

 13,600 feet. 



This species is very nearly related to L. multiformis^ Cope, 

 from which it is to be distinguished by the larger dorsal 

 scales. The two species establish a passage from Liohemus 

 to Ctenoblepharis, especially through G. Jamesii^ Blgr. 



Liocephalus rhodogaster. 



Upper head-scales small, faintly pluricarinate ; nostril 

 supero- lateral ; nasal separated from the rostral by one series 

 of scales ; three or four supraoculars feebly enlarged trans- 

 versely ; parietals broken uj) ; no distinct denticulation on 

 anterior border of ear. Sides of neck slightly plicate, 

 covered with small imbricate scales ; a strong fold in front of 

 the shoulder. A feeble but very distinct dorsal crest. 

 Dorsal scales rather sn)all, mucronate, strongly keeled, the 

 keels forming slightly oblique longitudinal lines ; lateral 

 scales a little smaller, strongly keeled, the keels forming- 

 oblique lines directed upwards; ventral scales quite as large 

 as dorsals, smooth ; 73 or 75 scales round the middle of the 

 body. Gular scales as large as dorsals. The hind limb, 

 stretched forwards, reaches the eye. Tail feebly compressed, 

 crested like the back. Olive or brown above, with a dorsal 



