six new species of Saurian Reptiles. 345 



The brown hue increases in intensity, I beheve with anger, 

 and sometimes extends over the belly, paled along the mesial 

 line; at other times the belly retains the ordinary glaucous 

 hue. The goitre is not susceptible of any change of colour. 



? . Length of body li inch ; of tail 2^^ inches ; total 3| inches. 

 Upper parts wood-brown, crossed by three broad transverse 

 bands of black, the first in the middle of the trunk, the third 

 immediately over the thighs, the second intermediate ; each band 

 is edged anteriorly and posteriorly w^ith white, and a narrow 

 white line runs along the mesial line of the loins, dividing the 

 second and third band : tail crossed by four or five pale lozenge- 

 shaped marks ; outer surface of limbs crossed by several darker 

 transverse bands. Under parts both of body and limbs yellowish 

 white. 



The females in this genus seem to have the faculty of changing 

 their colour in much less perfection than the male ; and I have 

 reason to believe that the power of stretching the goitre is very 

 little, if at all, possessed by this sex, 



Hab. Jamaica. Very common about houses in the lowlands. 

 Sj)ecimens in Brit. Mus. 



The trivial name is formed from Ici)St]<;, violet-coloured, and 

 ovpa, the tail. 



In spirits this resembles A. punctatus, a Brazilian species, but 

 differs from it in the tail being much longer, more slender, and 

 more compressed ; and in the white dots on the head being much 

 more obscure, and more confluent. 



2. Anolis opalinus. The Pearly-bellied Anolis. Nuchal crest 

 inconspicuous : tail roundish, slightly compressed ; indistinctly 

 crested; strongly keeled beneath, the keels forming about six 

 continuous ridges. ^. Length about the same as that of ^. 

 iodurus. Drab, or pale wood-brown, thickly studded with dark 

 brown spots, irregularly confluent, so as to form a rude netted 

 pattern ; the mesial line of the back is slightly paler than the 

 ground colour, and, being crossed by undeflned bands of dark 

 brown, displays a series of pale areas along the dorsal surface ; 

 the alternate pale and dark bands aie most conspicuous and most 

 regular on the tail. A stripe of dark brown, still reticulated, 

 proceeds from the muzzle through the eye, and along the side to 

 the thigh, where it is lost ; below it runs a pale stripe parallel 

 to it. The external surface of the limbs is reticulated and banded 

 like the body. The under parts pale yellowish, speckled at the 

 sides with brown. The scales of the belly are iridescent in both 

 this and the preceding species, but chiefly in this, the belly of 

 which, when the angle formed by the incident ray and the reflected 

 one is very wide, glows with a ruddy golden hue, exceedingly 

 beautiful and opaline. 



Ann. ^ May. N. Hist. Ser. 2. Vol. vi. 23 



