254 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



pair of frontoparietals separated from each other by the posterior 

 prolongation of the frontal; parietals moderate, only slightly larger 

 than the interparietal, separated from the supraoculars by one scale 

 in addition to a small frontoparietal, and from each other by the shield- 

 shaped interparietal and a small 5-sided occipital; five supraoculars, 

 the second the largest; a single nasal separated completely from the 

 rostral by the first supralabial; three loreals in row between nasal and 

 preocular, first in contact above with supranasal and frontonasal, 

 second with frontonasal, prefrontal, very narrowly with first supra- 

 ocular, more broadly with first superciliary, third with first super- 

 ciliary; a long subocular lying above sixth and seventh supralabials 

 and somewhat restricting their upper margins; 10 supralabials, the 

 last one scarcely distinguishable from the neck scales; four temporals 

 in the first row, forming a semicircle behind eye; mental small, a little 

 larger than the anterior infralabials, followed by a single, slightly larger 

 postmental; four pairs of large chin shields and a fifth small pair, 

 the two anterior pairs in contact with each other and with the 

 infralabials; ear opening round, very small, less than one-half the 

 eye opening; body very elongate, the tips of the fore limbs and hind 

 limbs lying against the body separated by an interval equal to length 

 of forelimb; 37 scale rows around the middle of the body; 86 dorsal 

 scales between the occipital and a point directly above the vent; 59 

 ventrals from the anal plates to the center of the breast level with the 

 axillae; dorsal scales with a median keel and 12 to 14 distinct striae, 

 laterals more faintly striated, ventrals practically smooth; six preanal 

 scales, the outermost not enlarged; limbs short, only moderately de- 

 veloped, the foreleg equal to distance from tip of snout to posterior 

 border of ear, the hindleg 25 percent of the length of head and body; 

 five rather short fingers, third slightly longer than fourth, these having, 

 respectively, 10 and 9 subdigital lamellae; toes five, all relatively 

 short, fourth only slightly longer than third, these having, respectively, 

 12 and 14 lamellae; scales on sole of foot rounded and almost tubercu- 

 lar in appearance, not spinose; tail nearly cylindric, tapering to a 

 point, shorter than head and body and covered with scales like those 

 of body, the two median scale rows underneath the tail considerably 

 wider than the others. 



Dimensions: Head to posterior border of ear, 13.5 mm.; head and 

 body, 67 mm.; tail, 57 mm.; foreleg, 14 mm.; hindleg, 17 mm.; width 

 of head, 10 mm. 



Color (in alcohol): Body color vandyke brown above, with about 10 

 narrow dark brown dorsal stripes of which the central ones are more 

 or less broken up; lateral region deep clove brown, with a pearl-gray 

 dot on each scale; ventral region pearl gray with coarse mottlings of 

 dull brown ; head plates with dark brown margins ; a heavier aggrega- 

 tion of brown behind eye and along dorsolateral region suggesting a 



