336 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



Description. — Adult male, U.S.N.M. No. 60614; Jeremie, Haiti; 

 December 3, 1917; Dr. W. L. Abbott, collector. Kostral as deep as 

 broad, scarcely visible from above; intemasal suture shorter than the 

 prefrontal suture; frontal shorter than its distance from the rostral, 

 much shorter than the parietals, and widely separated from the pre- 

 ocuLor; supraocular about as wide as frontal; diameter of eye two- 

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

 its distance from the eye; loreal small, a little broader than high; 

 one preocular on the right side, two on the left; two postoculars, 

 the upper the larger; temporals 1+2; 8 supralabials, the second in 

 contact with the nasal, prefrontal and loreal; the third, fourth and 

 fifth supralabials entering the eye; 11 lower labials, the first in con- 

 tact with its fellow behind the sjmiphysial; both pairs of chin shields 



Figure 99. — Uromacer frenatus: a. Top of head; b, side of head; c, chin. U.S.N.M. No. 

 60614, from Jeremie, Haiti. Twice natural size. 



the same in length; the first pair in contact with five and the second 

 pair with two lower labials; scales smooth, without pores, in 17 

 rows decreasing to 11 at the beginning of the tail; ventrals 192, anal 

 divided; subcaudals 205. Head and body, 678 mm.; tail, 548 mm. 



Color (in alcohol): Dull turquoise blue on top of the head, becoming 

 brighter on the neck; body color drab-gray above, somewhat paler 

 beneath; a sharp white line extending from the tip of the snout along 

 the upper labials and gradually becoming indistinct on the side of the 

 neck; throat and chin pale turquoise blue. 



Variations. — The tendency toward variation on the head shields 

 seems to be quite marked in the region in front of the eye. In nearly 

 all cases where a single large preocidar is found, this scale has a deep 

 horizontal crease through the middle, and in a few cases a partial 

 division has actually taken place along this groove. The loreal itself 

 may be present or absent, or reduced to the size of a mere granule. 



