THE HERPETOLOGY OF HISPANIOLA 161 



one row of very small granules, which in front of the disk form a patch 

 of gradually enlarging granules; can thus rostraiis sharp, consisting of 

 three elongated shields of wliich the middle one is slightly the longer; 

 superciliary ridge consisting of one elongate scale followed by a very 

 small one, this in turn being followed behind by a double row of 

 differentiated scales larger than the granules above and below them; 

 loreal rows six; subocular semicircles keeled, not in contact with the 

 supralabials ; supralabials 10, the seventh under the center of the eye, 

 the following ones increasingly smaller; temporal granules about the 

 size of the dorsolaterals; a well-marked double series of small scales 

 forming the supratemporal line; dorsal and lateral granules minute, 

 tubercular; a median enlarged series of scales down the center of the 

 back beginning on the nuchal region, diminishing slightly on the sac- 

 rum and continuing on the tail as a low, serrate ridge; ventral scales 

 relatively large, imbricate, rounded behind, smooth, those on the 

 throat very small and bluntly tuberculate; anterior face of forelegs and 

 hindlegs covered with large keeled scales about the same size as the 

 ventrals; scales covering hands and feet above unicarinate to multi- 

 carinate; digital expansion wide, with about 20 lamellae under the 

 second and third phalanges of the fourth toe, 32 under the entire toe; 

 tail short, compressed, with well-marked verticils of somewhat en- 

 larged rectangular scales, those between being pointed and smaller, 

 in about eight vertical, somevv^hat irregular series, all imbricate, not 

 keeled, surmounted by a strongly serrate edge of enlarged scales, 

 triangular in profile, tlu-ee to every verticil, the last one enlarged 

 slightly; dewlap naked, with many close-set series of rather small, 

 weakly multicarinate or enthely smooth scales, edge thickened and 

 set with larger scales; postanal plates slightly developed; a skin fold 

 on the neck and back. 



Dimensions: Snout to vent, 67 mm.; tail, 112 mm; orbit to tip of 

 snout, 10 mm.; orbit to orbit, 9 mm.; snout to posterior ear, 23 mm.; 

 snout to center of eye, 13 mm. ; width of head, 15 mm. ; foreleg, 32 mm. ; 

 hindleg, 59 mm; tibia, 18 mm. 



Color (in alcohol) : Above sepia, suffused on head and back with 

 dull heliotrope-purple, lower parts olive-buff, darker on the tail; all 

 the ventral scales including those of dewlap very finely punctate with 

 minute black dots. 



Variations. — In the 375 examples of this species now in the National 

 collection almost every possible variation exists. Som.e of the speci- 

 mens have heavy keels on the ventral plates; in others from precisely 

 the same locality taken at the same time the ventrals are perfectly 

 smooth. The loreal rows vary all the way from 4 to 10 in number. 

 The supraorbital semicircles may be broadly in contact or widely 

 separated. The scales on the snout may be very small or unusually 

 large, the two extremes well shown in the P^tionville specimens. 



