THE HERPETOLOGY OF HISPANIOLA 339 



length of the snout; nasal undivided, two-thirds as long as its distance 

 from the eye; loreal small, a little wider than high; one preocular; 

 two postoculars, the lower one very small; temporals 1+2; 8 supra- 

 labials, the second in contact with the nasal and prefrontal, barely 

 with the loreal; the third, fourth and fifth supralabials entering the 

 eye; 11 lower labials, the first in contact with its fellow behind the 

 symphysial; both pairs of chin-shields the same in length, the first 

 pair in contact with five and the second with two lower labials ; scales 

 smooth, without pores, in 17 rows decreasing to 11 at the beginning of 

 the tail; ventrals 177; anal divided; caudals 179. 



"Dimensions. — Head and body, 620 mm.; tail, 420 mm.; eye diam- 

 eter, 3.8 mm.; eye to tip of snout, 9.2 mm. 



"Coloration (in alcohol). — Top of head dark Nile blue, merging on 

 the neck with the light drab of the body color ; traces of narrow sepia 

 cross-bars separated by the width of one scale on the anterior portion 

 of the body, posteriorly becoming much less obvious, and appearing 

 as sepia patches on the skin and sometimes on the edge of a scale, 

 with a general darkening of the mid-dorsal area with suffusions of 

 light sepia; upper and lower labials and chin pale glaucous green; a 

 narrow black line beginning on the rostral and continuing backwards 

 along the top of the upper labials, sharply separating the dark hue of 

 the top of the head from the pale color of the lips, this line fading out 

 quickly on the neck; ventral surface pinkish buff with a fine uneven 

 powdering of sienna; a sepia spot rarely occurring on the edge or 

 middle of a ventral plate; tail with similar spots occurring more fre- 

 quently but just as irregularly. 



"The finding of a representative of the Hispaniolan Uromacer 

 frenatus on an outlying island was to be expected, since catesbyi had 

 given rise to scandax on Tortuga Island, and oxyrhynchus to dorsalis on 

 Gonave Island." 



UROMACER DORSALIS Dunn 



Figure 101 



1920. Uromacer dorsalis Dunn, Proc. New England Zool. Club, vol. 7, p. 43 

 (type locality, Gonave Island). — Cochran, Proc. Biol. Soc. Washington, vol. 

 41, p. 54, 1928; Occ. Pap. Boston Soc. Nat. Hist., vol. 8, p. 185, 1934.— 

 Barbour and Loveridge, Bull. Mus. Comp. Zool., vol. 69, No. 10, p. 358, 

 1929.— Barbour, Zoologica, vol. 11, No. 4, p. Ill, 1930; vol. 19, No. 3, p. 135, 

 1935; Bull. Mus. Comp. Zool., vol. 82, No. 2, p. 155, 1937.— Amaral, Mem. 

 Inst. Butantan, vol. 4, p. 163, 1929. 



This species, as well as Uromacer scandax Dunn, was described from 

 a single specimen. I append Dunn's original description: 



"Diagnosis. — A Uromacer with 17-13 scale rows, 205 ventrals, 

 eye three times in snout, and a dark dorsal band. 



"Type, adult female, M.C.Z., no. 12,867, Gonaives [Gonave] Island, 

 West Indies, August, 1919, collected by G. M. Allen. 



