234 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



Since the above description was published, another fine male 

 has turned up in the collection belonging to the University of Puerto 

 Kico. It was captured at Santo Domingo City on June 10, 1934, by 

 S. T. Danforth. 



LEIOCEPHALUS PERSONATUS BEATANUS Noble 



Figures 64, 66d 



1923. Leiocephalus beatanus Noble, Amer. Mus. Nov., No. 64, p. 5 (type locality, 

 Beata Island, Dominican Republic). — Barbour and Loveridge, Bull. Mus. 

 Comp. Zool., vol. 69, No. 10, p. 289, 1929.— Barbour, Zoologica, vol. 11, 

 No. 4, p. 99, 1930; vol. 19, No. 3, p. 122, 1935; Bull. Mus. Comp. Zool., vol. 

 82, No. 2, p. 138, 1937. 



1934. Leiocephalus personatus beatanus Cochran, Occ. Pap. Boston Soc. Nat. 

 Hist., vol. 8, p. 177. 



Description. — U.S.N.M. No. 86864, an adult male from Beata Is- 

 land, Dominican Republic, collected by Dr. A. Wetmore and F. C. 

 Lincoln between May 11 and 13, 1931. Head shields enlarged, not 

 very heavily ridged anteriorly, slightly more so posteriorly; three 

 scales (an intemasal and two prefrontals) between the rostral and 

 the beginning of the supraorbital ring, the posterior one the largest; 

 nasal in contact with the rostral; internasals somewhat elongate, 

 barely separated from each other; the prefrontals and internasals 

 embracing a medial series of three scales, the first one in contact with 

 the rostral between the internasals, the others successively following 

 behind; prefrontals separated from the canthals by an elongate scale; 

 two heavy rounded canthal scales followed by three long and narrow 

 superciliaries and a slightly shorter terminal one; seven ridged supra- 

 oculars, the anterior very small, separated from the superciliaries by 

 one (anteriorly) or two (posteriorly) rows of small keeled scales, and 

 from the frontals by a single row of similar scales; frontals large, 

 widely in contact; occipital small, bordered by two distinct pairs of 

 parietals on each side, the inner about half as large as the outer, and 

 about four times the area of the occipital, which fails to separate the 

 inner parietals posteriorly; four upper and five lower labials to a point 

 below the center of the eye; temporal scales increasing regularly in 

 size, the last one just above and in front of the ear the largest and most 

 conspicuous; anterior border of the ear with four coarse projecting 

 scales. Dorsal scales large, imbricate, and highly mucronate ; laterals 

 only shghtly smaller than the dorsals but much less mucronate; 

 ventrals slightly larger than the dorsals, smooth, their posterior edge 

 highly denticulate; about 38 scales around the middle of the bod}^; 

 about 47 scales from the occiput to a point directly above the vent; 

 about 11 scales the equivalent of the distance from snout to occiput; 

 nuchal scales moderately large, those on the sides of the neck and 

 behind the ear like the dorsals, keeled and imbricate, not granular. 

 Shoulder folds rather poorly developed; no lateral folds. The ad- 



