REPTILES AND BATRACHIANS COLLECTED ON PULO CONDORE. 95 



G-onatodes glaucus, sp. nov. 



Snout long and rounded, longer than the distance between 

 the eye and the ear-opening ; ear-opening vertically oval, about 

 half the diameter of the eye ; head covered with small granules, those 

 on the snout keeled, and larger than those on the back of the 

 head. Rostral large, twice as broad as high, with a median cleft 

 above ; nostril bordered anteriorly by the rostral, a supranasal and 

 the 1st labial; 8-10 upper and 7-8 lower labials; mental very large, 

 triangular, with a small azygos shield at its apex ; two pairs of 

 chin-shields, first much larger than second. Body above covered with 

 small granules, and with enlarged tubercles on the back arranged 

 in about ten fairly regular longitudinal series ; an oblique series of 

 tubercles passing backwards and inwards from above the tympanum, 

 and another series parallel to it in front of the shoulder. Ventral 

 scales cycloid, imbricate, smooth. No femoral or praeanal pores ; 

 a series of slightly enlarged scales along the underside of each thigh. 

 Tail cylindrical, suddenly constricted* after the postanal swelling; a 

 paired series of enlarged pointed tubercles above on either side of a 

 median groove, and enlarged transverse plates below which com- 

 mence at the constriction. Limbs long, covered with small granular 

 scales above ; a series of 6-7 very large transverse scales beneath the 

 tibia ; digits long and slender, the basal portion not -dilated, with 

 enlarged, transverse scales below. The hind limb reaches the neck. 



Grey above, with large black spots on the neck and shoulders, 

 and sometimes a few, less distinct, on the back ; the enlarged series 

 of tubercles on the neck and body, whitish ; below greyish-white. 



I cannot discover any close ally to this new species. The 

 possession of enlarged plates beneath the tibia appears to be unique 

 in the genus. 



49 specimens examined. Type series, 4032, 4033, 4043, 

 4047, 4062, 4068, 4071, 4079. 



*The constriction I at first regarded as due to a reproduced tail, 

 but as it is present in every example, I presume the character to be 

 normal. 



VOL. IV, NO. 2, 1920. 



