THE HERPETOLOGY OF HISPANIOLA 



357 



"Type.— U.S.N. M. No. 83890, an adult from Beata Island, Domini- 

 can Kepublic, collected on May 15, 1931, by Dr. A. Wetmore and 

 Mr. F. C. Lincoln. Rostral broader than deep ; internasals as long as 

 prefrontals ; length of frontal one and one-fifth times its distance from 

 the end of the snout, a little shorter than the parietals, separated from 

 the preocular; supraocular only sUghtly narrower than the anterior 

 portion of the frontal and equal to its width taken through the middle ; 

 nasal divided, a little longer than its distance from the eye; loreal 

 moderate in size, squarish, a little broader than deep; one preocular; 2 

 postoculars, the upper slightly the larger; one anterior temporal 

 followed by three smaller ones on the right (apparently normal) side 

 of the head; the left side with 2 -(-2 rather irregular temporal series; 

 eight upper labials, the second in contact with the posterior nasal and 

 loreal but not reaching the preocular, the third, fourth, and fifth 

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

 chin-shields and two with the posterior ones, which are slightly longer 



Figure 109. — Leimadophis parvifrons lincolni: a. Top of head; b, side of head; c, chin. 

 U.S.N.M. No. 83890, type, from Beata Island, Haiti. One and one-half times natural 

 size. 



than the anterior; scales in 19 rows, without pores; ventrals 163; anal 

 divided; caudals 128 with a considerable portion of the tail-tip missing. 

 "Color (in alcohol). — Top of head olive, this tone shading gradually 

 into a wide black dorsal stripe; a light area beginning on the can thus, 

 widening on the supraocular and continuing for about three head- 

 lengths along the body on the seventh and eighth scale-rows before it 

 merges with the black uniform color of the body ; a distinct black band 

 beginning at the tip of the snout and continuing backwards as a sharp 

 defining border to the light area as far as the occipital region; posterior 

 to this region the black band undulates so that the light area is alter- 

 nately narrow and wide, giving the appearance of light spots indis- 

 tinctly fused ; upper labials and chin vinaceous-buff , sharply contrasted 

 to the dark lateral stripe on the head but becoming darker on the 

 throat and finally turning to dull china blue mottled with dark 

 plumbeous gray on the belly; the light tone extends on the side of the 

 neck up to the middle of the fourth scale-row, but very shortly the 



