THE HERPETOLOGY OF HISPANIOLA 241 



Genus HISPANIOLUS Cochran 



1928. Hispaniolus Cochran, Proc. Biol. Soc. Washington, vol. 41, p. 49 (type, H. 



pratensis) . 



The similarity of this genus to Leiocephalus in head scalation and in 

 general proportions is fairly evident on comparison. The complete 

 absence of dorsal or caudal crests in Hispaniolus serves to separate the 

 two genera completely, however. The color pattern is likewise highly 

 dissimilar. The range of Hispaniolus is not yet known to extend for 

 more than a few miles from the actual type locality. 



HISPANIOLUS PRATENSIS Cochran 



Figure 66e 



1928. Hispaniolus pratensis Cochran, Proc. Biol. Soc. Washington, vol. 41, p. 

 50.— 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. 



Original description .—"Type— -U.S.N .M. No. 69189, an adult 

 male collected at the Atalaye plantation near St. Michel, Departe- 

 ment du Nord, Republic of Haiti, on March 23, 1925, by Gerrit S. 

 Miller, Jr. 



"Description of the type. — Head-shields enlarged, all ridged excepting 

 the mternasals, which are smooth; nasal in contact with rostral; two 

 scales between the rostral and the first supraocular; mternasals very 

 elongate; the frontals, prefrontals and internasals embracing a medial 

 series of two subequal scales which completely separate the prefrontals 

 but which do not reach the rostral; prefrontals separated from the 

 can thals by an elongate scale ; three supraorbitals; five supraoculars on 

 each side, the fifth very small; occipital plate small, bordered laterally 

 by two pairs of distinct parietals, the outer pair considerably larger 

 than the inner pair; four upper and four lower labials to middle of eye. 

 Dorsal scales large, uniform, extremely imbricate and mucronate ; laterals 

 slightly smaller, keeled; ventrals smooth, their posterior edges not 

 denticulate; about 41 scales around the middle of the body; about 42 

 scales from occiput to a point directly above the vent; about 10 dorsal 

 scales to a head-length; scales of the neck like the dorsals, those behind 

 the ear keeled and imbricate, not granular; anterior auricular margin 

 with two well-developed projecting scales. Shoulder folds present, 

 but no lateral folds. The hind leg adpressed reaches only to a point 

 a little in front of the shoulder. Digits compressed; fourth toe with 

 24 keeled lamellae. No dorsal or caudal crests, the scales of the mid- 

 dorsal region like the surrounding scales in size and carination; the 

 keels of the lateral and dorsal scales directed backwards and upwards, 

 so that the longitudinal scale-rows strongly converge on the back. 

 Tail round, about twice as long as the head and body taken together. 



"Dimensions. — Length of head, 1 1 mm. ; boay, 36 mm. ; tail, 90 mm. ; 

 arm, 17 mm.; leg, 30 mm.; width of head, 8 mm. 



