134 IGtJANID^. 



little longer than head and body, thick, compressed, with sharp upper 

 edj?e ; it is covered with whorls of alternately larger and smaller 

 keeled scales, the larger of which are spinose. Olive above ; throat 

 marbled grey and white ; belly pink. 



Total length 182 millim. 



Head 24 „ 



Body 62 „ 



Fore limb 34 „ 



Hind limb 57 „ 



Tail 96 



5> 



Irnpana Mountains, Province Yungas, Bolivia. 



4. Stenocerciis humeralis. (Plate VIII. fig. 2.) 



Microphractus humeralis^ Gimth. Troc. Zool. Soc. 1859, p. 90. 



No pterygoid teeth. Anterior border of ear denticulated. Median 

 supraocular scales slightly broader than long ; occipital indistinct. 

 Sides aud lower surface of neck irregularly folded. Body depressed. 

 A vertebral denticulation. Dorsal scales very small, rhomboidal, 

 imbricate, keeled, not mueronate, the keels obliquely converging 

 towards the vertebral line ; nuchal and lateral scales minute, 

 granular, obtusely keeled ; gular scales granular ; ventral scales 

 considerably larger than the largest dorsals, rhomboidal, imbricate, 

 smooth. The adpressed hind limb reaches the ear or not quite so 

 far ; fifth toe reaching nearly as far as second. Tail a little longer 

 than head and body, rounded, tapering, covered with rings of 

 strongly keeled scales about the size of the ventrals. Upper parts 

 bluish-green, marbled with dark brown ; a black transverse band, 

 interrupted on the vertebral line, extends from one antehumeral 

 fold to the other ; throat bluish-green, with round lighter spots ; 

 lower surfaces greenish yeUow. 



Total length 182 millim. 



Head 19 



Width of head 14 



Body 61 



Fore limb 32 



Hind limb 49 



Tail 102 



Ecuador. 



a-b. c? 2 • Guayaquil. Mr. Fraser [C.]. (Types.) 



c. cJ. Cuenca. Mr. Fraser [C.]. 



5. Stenocercus varius. (Plate VIII. fig. 3.) 



No pterygoid teeth. Anterior border of ear slightly denticulated. 

 Supraocular scales, median series much broader than long ; occipital 

 not enlarged. Sides and lower surface of neck strongly folded. 

 Body depressed. No dorsal denticulation. Dorsal scales small, 



