IGUAN1D.E. 17 



This species has been reported only from the island of 

 Saba, whence thirteen specimens were sent us by Mr. F. 

 Lagois and others. 



AnOLIS VIRGATDS, sp. 11. 



Head rather large, one and two-thirds times as long as 

 broad, much longer than the tibia; forehead hardly con- 

 cave in adults, frontal ridges distinct, occipital scale in a 

 concavity ; upper head scales faintly keeled ; scales of the 

 supraorbital semicircles large, continuous forward with the 

 frontal series, in contact or separate mesially ; five to ten 

 enhirged feebly keeled supraoculars, partially or entirely 

 separated from the supraorbitals by a single row of gran- 

 ules ; rostral canthus angular, of four scales ; occipital 

 scales usually larger than the ear-opening, separated from 

 tlie supraorbital semicircles by one to three series of gran- 

 ular scales ; loreal rows five ; six or seven labials to be- 

 low the centre of the eye. Ear-opening small, vertically 

 oblong. Gular appendage medium, covered with smooth 

 scales. No dorso-uuchal fold. Dorsal scales keeled, 

 granular, little larger than those on the flanks, slightly 

 larger at the sides of two enlarged vertebral I'ows ; scales 

 around the occipital and on the parietal prominences 

 larger ; ventrals much larger than the largest dorsals, 

 smooth, imbricate; three or more rows of broad, smooth, 

 antefemorals. The adpressed hind limb reaches the eye ; 

 digital expansions medium ; twenty-three lamelliB under 

 phalanges ii and iii of the fourth toe. Tail compressed ; 

 serrated on the upper edge in a crest in which the large 

 scales are separated from each other by a pair each of 

 which is about half as large. Males with a pair of en- 

 larged post anal scales, in contact or separated by a single 

 scale. 



Gray ; white beneath. On back and flanks there are 

 3 



