2(j IGUANID^. 



6. Anolis cristatellus. 



C/n\ R. A. ii. 2nd ed. p. 49. 



Anolis cristatellus, Diini. 4" Bibr. iv. p. 143 ; Reinh. Sf Liltk. Vidensk. 



Medd. 1862, p. 249 ,• Bocourt, Mhs. So. Mex., Rept. pi. xiv. fig. 12; 



Pders, M<m. Bed. Ac. 1876, p. 706. 

 Ptychonotus (Istiocercus) cristatellus, Fitzing. Si/st. Rept. p. 65. 

 Xipliosurus cristatellus, O'Shauf/hn. Ann. |- Mag. N. IT. (4) xv. 



1875, p. 271. 



Head moderate, once and a half to once and two thirds as long 

 as broad, longer than the tibia ; forehead more or less distinctly con- 

 cave, with two diverging ridges ; a eoucavit}' behind the intgrorbital 

 region in the male ; upper head-scales smooth ; scales of the supra- 

 orbital semicircles very large, in contact between the orbits (ex- 

 ceptionally separated by one row of granules), produced forwards as 

 frontal series ; six to twelve enlarged, keeled supraocular scales, 

 separated from the supraorbitals by one or two rows of granules ; 

 occipital nearly as large as the ear-opening, separated from the 

 supraorbital semicircles by two or three series of scales ; canthus 

 rostralis sharp, canthal scales three ; five or six loreal rows ; 

 six or seven labials to below the centre of the eye ; ear- 

 opening moderately large, vertically suboval. Gular appendage 

 of moderate size, scarcely developed in the female, with rows of 

 distant small scales ; gular scales very small, feebly keeled. Body 

 rather short, feebly compressed, in the male with a dorso-nuchal 

 fold. Dorsal scales small, granular, smooth, smaller still on the 

 flanks ; ventral scales larger, cycloid, imbricate, smooth or feebly 

 keeled. Limbs moderately long ; the adpressed hind limb reaches 

 the eye or a little beyond ; digital expansions well developed ; 

 eighteen to twenty-five lamellse under phalanges ii. and in. of the 

 fourth toe. Tail compressed, strongly in the male ; the latter have 

 usuall}', but not always, a much developed fin-like crest on the basal 

 half of the tail, supported by the much-produced spinous processes 

 of the vertebrae ; length of the tail not twice that of head and body. 

 Male without distinctly enlarged postanal scales. Greyish or 

 brownish above, uniform or marbled with brown ; females and young 

 with a more or less distinct light vertebral band ; lower surfaces 

 whitish, uniform or dotted with brown ; gular appendage blackish. 



Total length 205 millim. 



Head 21 



Width of head 13 



Body 49 



Fore limb 33 



Hind limb 56 



Tibia 17 



Tail 135 



j> 



?> 



West Indies. 



a-g, h-n. o~p. d ? $ , St. Thomas. Hr. Riise [C.]. 



& hgr.' 



