SYSTEMATIC ACCOUNT OF THE SPECIES. 127 
minute granules and the belly-scales are large and smooth. The tail is long 
and slender with round, overlapping, smooth scales above and below. 
Description: — Adult @ M. C. Z. 12,304. Cuba: Camaguey; Sierra de 
San Juan de los Perros. Thomas Barbour. 
Snout pointed and elongate, the distance from the tip to the eye being 
distinctly longer than that from the eye to the ear opening; rostral moderate 
with a long median cleft behind; nostril between rostral, first supralabial, a 
large supranasal and two small postnasals; supranasal separated from its fellow 
on the opposite side by a single roughly hexagonal scale about two thirds the 
size of one of the supranasals, the three bordering the rostral above; four large 
and two small supralabials to below the centre of the eye; a spine on the super- 
ciliary margin over the centre of the eye; head above and on sides with ex- 
tremely minute granular scales; scales of the snout distinctly enlarged and 
flattened; scales on back very large (comparatively speaking), heavily keeled, 
imbricate, giving a rough appearance; about seven in the distance from the tip 
of snout to ear; the change from the cephalic granules to the large dorsal scales 
is gradual; a very narrow median zone of very small scales, most conspicuous 
on the nape and shoulder region; mental large, larger than rostral; two very 
large infralabials and two very small ones to below the centre of the eye; two 
small, slightly elongate chin shields behind the mental, followed by small flat 
scales which gradually become the tiny scales of the midgular region; scales of 
chest and throat rounded, imbricate, smooth, rather large, not however as 
large as the dorsals; scales of limbs much smaller, imbricate, smooth or feebly 
keeled; scales of tail small, rounded, slightly elongate, imbricate, smooth, a 
rather inconspicuously enlarged series on the lower median surface of the tail. 
Colour (in fresh specimen): — Uniform iron-gray above, pale below in the 
male, and in the female the ground-colour is bluish or stone-gray crossed on the 
nape, shoulders, and body by pairs of black bands; between these pairs of bands 
there are also cross-series of dark dots. In the young the pairs of bands are 
broad and conspicuous but the intermediate series of dots are absent. 
Dimensions: — Total length 58 mm. 
Tip of snout to vent 32 mm. 
Vent to tip of tail 26 mm. 
Greatest width of head 5 mm. 
Tip of snout to ear 7.5 mm. 
Fore limb 8 mm. 
Hind limb 11 mm. 
