Griffin: South American Lizards. 309 



eight in all), those of the median row much larger than the others, 

 separated from the supra-orbital row by a series of smaller scales; 

 occipital larger than the ear-opening, separated from the supra-orbital 

 row by two series of scales; canthus rostralis sharp, three canthal 

 scales; six series of keeled loreal scales; seven longitudinally keeled 

 upper labials to below the center of the eye; ear-opening small, oval, 

 very oblique. 



Gular appendage of male well-developed, of female, scarcely notice- 

 able; gular scales keeled. Body slightly compressed, short; no dorso- 

 nuchal fold. Dorsal scales much smaller than the ventrals, strongly 

 keeled, subimbricate, hexagonal, passing gradually into the small 

 scales of the sides of the body; lateral scales very small, keeled, sub- 

 imbricate, not granular; ventral scales large, imbricate, strongly 

 keeled, terminating in a sharp spine, the keels forming continuous 

 lines. The appressed hind limb reaches the posterior margin of the 

 orbit; digits very little dilated, twelve lamellae under the second and 

 third phalanges of the fourth toe. Tail nearly twice as long as the 

 head and body. No enlarged postanal scales. 



Gray above, a faintly indicated light vertebral line, and a more dis- 

 tinct light line along each side of the back from the eye to the tail; a 

 series of angular brown marks on each side of the back, opposite or 

 alternate, the points directed toward the vertebral line. On specimen 

 985 these are visible only on the posterior part of the trunk and the base 

 of the tail. Limbs barred with brown. The lips and upper surface 

 of the head are more or less spotted with brown. The lower surface is 

 yellowish. 



Type, C. M. No. 988, 9 , collected in the Provincia del Sara, Bo- 

 livia, by Jose Steinbach, January, 1912. Elevation, 350 meters. 



Paratype, C. M. No. 985, cf , collected by Steinbach at the same 

 place, in March, 191 2. 



The species is named in honor of the collector. 



M EASUREMENTS. 



C. M. No. 98s. C. M. No. 988, 



mm. mm. 



Total length 1382 1262 



Snout to vent 43 44 



Vent to tip of tail 95 82 



Length of head 12.5 12.5 



Width of head 7 7 



Snout to eai -opening 11.25 11 



Length of fore limb 19 18 



Length of hind limb 32.5 33 



'The tip of the tail of both specimens is missing. 



