HERPETOLOGY OF PORTO RICO. 001 



ered with gTanules which are largest on the snout j)arti('ularly so on 

 the rostral canthiis; eye equidistant between nostril and car. its diam- 

 eter being a])out one-half its distance from tip of snout; car-opening-, 

 elongated, o1)liquc, its diameter longer than greatest supralabial; tem- 

 ples graiudar like the top of the head with scattered, rounded tuber- 

 cles; mental triangular, slightly wider than rostral, its free margin 

 not twice as wide as nearest infralabials; seven larger infralabials; 

 four chin-shields in a row, of which the median pair is much the 

 larger, irregular liexagonal, their anterior angle fitting into the corner 

 between mental and tirst infralabials, broadly in contact with each 

 other on the median line and followed behind by four small shields 

 somewhat larger than the succeeding granules of the throat; upper 

 surface of body and flanks covered with granules about the size of 

 those of the head, interspersed with large convex, Ijut not keeled, 

 tubercles, each about as long as three or four graiuiles; these tubercles 

 show a tendency to form irregular longitudinal rows, there being 

 al)out sixteen across the middle of the back; throat covered with small 

 flat uniform granules stronglj^ contrasting with the imbricate cycloid 

 scales of the rest of the underside and of the legs, the abdominal scales 

 being slightly smaller than the dorsal tubercles, and al)out eleven con- 

 tained in the distance from nostril to eye; on the underside of the thighs 

 the three outer series of scales are larger, especially the last one, in 

 which the scales are tongue-shaped wnth free tip and bearing near 

 their base a pore, there being fourteen such pores on each femur, the 

 series nearly meeting on the belly; lingers and toes free, all with long, 

 compressed angularly raised and clawed distal phalanges; basal dilated 

 portion with four pairs of lamellae under inner toe and seven pairs 

 under the middle one, in addition to the large unpaired terminal 

 lamella; tail cylindrical, somewhat depressed, covered with small scales 

 or large granules, slightly largei' than those on the snout, and about 

 six longitudinal rows of conical tu])ercles or spines in whorls about 

 seven scales apart, underside with a median series of large plates, 

 about two to a whorl; the regenerated portion of the tail with slightly 

 larger irregularl}- arrayed scales without spines aljove or regular 

 plates below. 



Color (in alcohol) pale drab gray, indistinctly and irregularly mot- 

 tled and spotted with dusky abo\'e. 



•mm. 



Total length ( tail partly reproduced ) lit) 



Snout to vent (> 1 



Vent to tip of tail (partly reproduced ) 55 



Snout to ear 16 



Greatest width of head 12.5 



Fore leg from axilla _ 20 



Hind leg from groin 26 



Axilla to groin 28 



