624 REPORT OF NATIONAL MUSEUM, 1902. 



the body, dorsals and laterals finely striated, not keeled, the average 

 number of stride on the back being eleven; preanal scales somewhat 

 enlarged; fore legs shorter than distance from tip of snout to ear 

 opening; five fingers, short, third longest, inner one very short; hind 

 legs short; five short toes, fourth longest, first very short; tail cylin- 

 dric, ending in a point, longer than head and body, covered with scales 

 like those of the body, the two median rows underneath very slightly 

 larger than the others. 



Color above (living and in alcohol) walnut brown, with numerous 

 more or less interrupted and anastomosing dusky cross bands which 

 do not reach the lateral longitudinal band. The latter is of a dark 

 brownish gray with a sharply defined crenelated upper edge, gradually 

 fading into the pale color of the underside which is clay colored 

 washed with orange; lower lips and throat spotted with dark brown- 

 ish gray. 



Dimensions. 



vim. 



Tip of snout to tip of tail 172 



Tip of snout to vent 81 



Vent to tip of tail 91 



Tip of snout to ear 12 



Width of head 10 



Tip of snout to fore leg 24 



Distance between tips of adpressed limbs 28 



Fore leg 11 



Hind leg 16 



Our largest specimen (No. 25528) is somewhat larger, measuring 

 101 mm. from snout to vent, but the tail is broken. 



Variation. — Our four specimens are essentially alike, and the species 

 does not seem to be subject to great variation. In the type the pre- 

 frontal seems to be divided, and in our number 25634 only three chin- 

 shields are present on the right side. The number of scales round the 

 body varies between 34 and 38, two having 36. A rather } T oung indi- 

 vidual (No. 25634) differs chiefly in the head being proportionately 

 larger, snout to ear measuring 8 mm. and snout to vent 40 mm. 



Habitat. — So far as known this species is confined to Porto Rico 

 proper, where it seems to be rare. The four specimens in our collec- 

 tion are the onty ones apparently of which the exact locality is known. 

 They were all taken in the coffee belt. 



Habits. — Nothing is known of its habits. The one I collected I 

 picked up from under a flat stone. Its movements were slow, and 

 when grabbed b} r the tail it wriggled itself loose from this member 

 without much effort. 



