BARBOUR AND NOBLE: THE GENUS CYCLURA. 161 
Diagnosis: — Nasals separated from the rostral by a single row of 
scales; nasals separated from each other by two rows.-of scales. Pre- 
frontals in a double series of three large shields, strongly convex, the 
posterior pair particularly so, the two rows separated from each other 
by several rows of small scales, the posterior pair of prefrontals sepa- 
rated from the median frontal tubercle by a single row of very nar- 
row scales. Supraorbital semicircles scarcely differentiated from the 
supraocular scales but somewhat larger than the frontoparietal scales. 
A single large canthal scale preceded by a small, hexagonal precanthal. 
Dorsal crest low, not over four millimeters high, reduced on the 
shoulders, nearly interrupted on the rump but not a distinct break in 
the whole. Verticils faintly indicated, the limiting row only a trifle 
larger than the row preceding it. Color very faded in the specimens 
examined, but probably uniform olive-gray in life, slightly more 
yellowish on the head and under surface. 
Habitat: — Haiti. 
Description: — 'Two specimens, a young one, and the head of a half 
grown individual M. C. Z. 3597, Jeremie, Haiti, 1859, D. F. Weinland. 
Rostral wide, as wide as mental, separated from the nasals by a 
single row of scales; nasals large, ovoid, perforated by large nostrils 
posteriorly, separated from each other by two rows of scales; on each 
side of the top of the snout, immediately following and adjoining the 
nasals two rows of three large shields, strongly convex, the posterior 
pair tubercular, the rows separated from each other by two or three 
' rows of small scales; of these two rows of large scales the posterior 
pair is nearly as long as the two others together; a large median 
frontal tubercle separated from this posterior pair of prefrontals by a 
single row of narrow scales; supraocular semicircles scarcely differ- 
entiated, but slightly larger than the supraorbital scales and dis- 
tinctly larger than the frontoparietals; occipital located well forward 
between the semicircles from which it is separated by two or three 
rows of small scales, situated on a line between the posterior 
borders of the orbits; a single large canthal scale preceded by a 
small, hexagonal precanthal; a well-developed series of strongly 
keeled suboculars continued backward as a supratympanic series to 
above the ear; seven supralabials to below the middle of the eye; two 
or three rows of granules separating the suboculars from the supra- 
labials; above the angle of the mouth and in front of the lower edge 
of the ear a large tubercular shield, above it about the middle of the 
edge of the ear another tubercle almost as large; nine lower labials 
to the center of the eye; a series of enlarged malar scales, the posterior 
