372 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
median prefrontal in contact with the anterior internasals in 1, sep- 
arating medially the scales of the posterior pair. 
Scale rows 33 in 4, 35 in 2 (Nos. 46651, 118525) ; lamellae under ter- 
minal digits flatter than others; lamellae on fourth toe 15-16 in 2, 
16-16 in 1, 17-18 in 1, 18-2 in 1, indeterminate in 1. 
CELESTUS ROZELLAE, new species 
Holotype—U.S.N.M. No. 113526, an adult from the vicinity of 
Palenque, Chiapas. 
Paratypes—Two, one from Piedras Negras, Petén, Guatemala 
(U.S.N.M. No. 113527) ; the other (U.S.N.M. No. 62992) is from an 
unknown locality (from fruit ship at New Orleans, La.). 
Diagnosis—Scale rows 31 to 33; frontal in contact with a single 
prefrontal; latter in contact with only anterior supraocular; 8 to 10 
labials to posterior edge of supraocular; first labial not extending be- 
yond anterior margin of naris; median loreal as long as either of the 
others, or longer; portion of rostral visible from above greater than its 
distance from second pair of internasals; sides dark with vertical light 
bars, in young and adults; young with a broad, dorsolateral light stripe 
on each side, fading and indistinguishable in adults. 
Description of holotype.—Portion of rostral visible from above two- 
thirds as long (1.1 mm.) as its distance from prefrontal (1.5 mm.) ; 
two pairs of internasals; a large median prefrontal in contact with 
anterior supraocular and narrowly separated from anterior supercili- 
ary; width of frontal (3 mm.) two-thirds its length (4.7 mm.) ; inter- 
parietal subtriangular, its suture with frontal a little smaller than 
suture with either anterior frontoparietal; interparietal and occipital 
subequal in size, two-thirds size of either parietal; 3 frontoparietals, 
anterior largest, median smallest; nasal very elongate, nostril pierced 
posteriorly ; 2 superimposed postnasals; 3 loreals, 2 anterior subequal 
in size, smaller than posterior; lateral prefrontal a little larger than 
median loreal, separating latter from median prefrontal; a single pre- 
ocular, equal in size to anterior loreal; a short anterior and long poste- 
rior subocular; 4-5 posteculars; 8 superciliaries; 5 primary (inner) 
supraoculars, 3 secondary outer supraoculars; posterior edge of first 
labial about even with anterior border of naris; 7-8 Jabials to below 
middle of eye, 8-9 to posterior end of subocular; 1 postmental and 3 
large pairs of chinshields, the scales of the anterior pair in contact 
medially. 
Ear opening small, much smaller than eye opening; 31 scale rows 
around middle of body; 21-22 lamellae under fourth toe; lamellae 
under distal phalanx larger and flatter than others. 
Snout to vent 84 mm.; snout to posterior border of ear 14.9 mm.; 
foreleg 19.2 mm.; hind leg 26 mm. 
