134 IGUANIDH. 
little longer than head and body, thick, compressed, with sharp upper 
edge; 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) wescctaceia vay whos 24, 
Body: aviscweaavas a caesar G2 4, 
Fore limb ............ 34. Ci, 
Hing lim 6.4: csee hens 57 oy 
Pail. aaeaaeg weed datee veal 96 
9 
Trupana Mountains, Province Yungas, Bolivia. 
4, Stenocercus humeralis. (Puate VIII. fig. 2.) 
Microphractus humeralis, Giinth. Proc. Zool, Soc. 1859, p..90. 
No pterygoid tecth. Anterior border of ear denticulated. Median 
supraocular scales slightly broader than long; occipital indistinct. 
Sides and lower surface of neck irregularly folded. Body depressed. 
A vertebral denticulation. Dorsal scales very small, rhomboidal, 
imbricate, keeled, not mucronate, 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 yellow. 
Total length .......... 182 millim. 
Head) ioc cytes 19, 
Width of head ........ 14.sC««, 
BOO? oc s-o-cuge ve tage.3. 8 61 ,, 
Fore limb ............ 32 CO, 
Hind. limb 2... 49 ,, 
Tail, gc scnsrod caanpa hayes 102 —Ca, 
Keuador. 
a-b. SQ. Guayaquil. My. Fraser te: . (Types.) 
a 3. Cuenca. Mr. Fraser oy 
5. Stenocercus varius. (Pxrare 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, 
