27. XROPIDtJRUS. 175 



millim. millim. 



Total length 370 Fore limb 65 



Head 29 Hind limb 112 



Width of head .... 2G Tail 230 



Body Ill 



Peru ; Chili. 



A. Upper surfaces blackish-olive, more or less abundantly dotted 

 with pale olive, with or without a black lateral band ; lower 

 surfaces bluish or greenish grey ; throat and chest black or 

 blackish. 



B. Dark olive above, hind limbs with whitish spots ; a white band, 



as long as the femur, on each side in front of the hind limb ; 

 lower surfaces white, gular region with black angular bands 

 pointing backwards. 



h. Yg. Peru. Smithsonian Institution [P.]. 



C. Yellowish grey or olive above, with yellowish or pale olive dots 



and black cross linos or reticulations ; lower surfaces dirty 

 white, belly sometimes black ; throat with black angular bands 

 pointing backwards ; chest black or with black cross bands. 



i, k, I. (S Sc bgr. Peru. 



m. J. Chili. 



«-^. d&hgr. ? ~ Sir A. Smith [P.]. 



D. Pale olive-grey, vertebral line lighter ; back with transverse 



blackish spots or cross bands, sometimes reticulated ; limbs 

 with blackish cross bands ; lower surfaces whitish, throat and 

 sides of neck with round black spots. 



G. Tropidurus spinulosus. 



Microlophus spinulosus, Cope, Proc. Ac. Philad. 18G2, p. 351. 

 Leioceplialus (Craniopeltis) variegatus, O' Shauqhn. Ann. 8f Mag. 



iV. i/. (5) iv. 1879, p. 301. 

 Tropidurus (Microlophus) spinulosus, Boctfy. Zeitsc/ir. f. Natimo. 



Iviii. 1885, p. 216. 



Upper head-scales smooth, convex ; a series of four or five feebly 

 dilated transverse supraoculars ; occipital a little longer than broad, 

 narrower than the supraocular region ; temporal scales conical ; a 

 group of small erect spine-like scales in front of the ear. A strong, 

 slightly curved antchumcral fold, nearly meeting its fellow on the 

 throat ; a strong transverse fold in front of the latter, forming a 



