''iq2n°l DUNN — SOME HAITIAN SNAKES 43 



Uromacer dorsalis sp. nov. 



Diagnosis. — A Uramacer 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 Island, West Indies, 

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



Description. — Scales, 17-13; ventrals, 205; anal, divided; caudals, ? ; 

 oculars, 1-2; temporals, 1-2; eye contained three times in its distance 

 from tip of snout, rostral higher than wide; labials, eight above, 4 and 5 

 entering eye; lower labials ten, five in contact with anterior chin shields, 

 which are as long as the posterior; nasal separated from loreal by pre- 

 frontal, which reaches labials 2 and 3. The scales of the fourth dorsal row 

 bordered with black on upper posterior edge; scales of first, second and 

 third rows, white anteriorly, darker on posterior part of body; dorsima 

 above scale row four, brown; head and throat blue (green in life?); upper 

 labials white, edged above with dark, which is continuous with the stripe 

 along the fourth scale row; belly light gray anteriorly to dark gray pos- 

 teriorly, a dark dot on ends of ventrals anteriorly. 



The tjT^e is the only specimen of this form, but its peculiari- 

 ties are such that there is no doubt of its specific distinctness. 

 Apparently it is derived from U. frenatus. 



Uromacer scandax sp. nov. 



Diagnosis. — Like Uromacer catesbyi, but with 19-11 scale rows and 181 

 ventrals. 



Type, adult female, U. S. N. M., no. 59,438, Tortuga Island, West 

 Indies, May, 1917, collected by W. L. Abbott. 



Description. — Scales, 19-11; ventrals, 181; caudals, 162-f-; oculars, 1-2; 

 temporals, 1-2; eye contained twice in its distance from tip of snout; 

 rostral twice as broad as high; labials eight above, 4 and 5 entering eye; 

 lower labials ten, five in contact with anterior chin shields, which are 

 shorter than the posterior; nasal separated from loreal by prefrontal, 

 which is broadly in contact with second labial. Dark bluish, hghter on 

 sides. A black line through eye; upper labials white. Belly light gray 

 anteriorly, to dark bluish gray posteriorly. 



Only the type has been seen. It is evidently allied to catesbyi. 



On Gonaives we know dorsalis and catesbyi. The former 



probably represents the Haitian frenatus. One specimen of 



