160 bulletin: museum of comparative zoology. 



lower edge of the ear three large tubercular shields in a horizontal 

 row; above them along the edge of the ear three or four rows of smaller 

 scales, strongly tubercular and grading off in size anteriorly; below 

 the angle of the mouth a few scattered enlarged scales, each surrounded 

 by a circle of granules; seven lower labials to the center of the eye; 

 a row of enlarged malar scales, the posterior ones strongly keeled and 

 separated from the infralabials by a single row of fairly large scales 

 of which the posterior ones are also keeled; dorsal and ventral scales 

 small, about thirteen contained in the vertical diameter of the t^on- 

 panum; from the nuchal fold along the median line of the neck and 

 back a series of medium sized spines, not interrupted or greatly re- 

 duced on the shoulders, and only decreased in size on the rump; the 

 longest spines about a centimeter in length; fifty spines in the crest 

 from the shoulders to the rump; upper surface of the limbs with 

 slightly imbricated, keeled, posteriorly pointed scales somewhat larger 

 than the dorsals; on the lower arm about eleven, on the upper about 

 fifteen of these scales to the vertical diameter of the tympanum; a 

 single series of eighteen femoral pores; inner side of second toe with 

 one comb, of the third toe with two combs, each consisting of three 

 large and two small lobes; tail compressed, covered with obliquely 

 keeled scales in vertical rows forming distinct verticils; tail sur- 

 mounted by a row of spines slightly larger than, but continuous with, 

 those of the body-crest. 



Coloration: — Ground tone of dorsal surface brownish gray, almost 

 a mud color; top of snout, sides of head washed with green; lower 

 labials yellowish green; dorsal and lateral surfaces of the body faintly 

 blotched with straw color, the blotches often breaking up into groups 

 of small spots; upper surface of the thighs, sides of tail profusely 

 blotched with the same color; ventral surface muddy gray; the legs 

 tinged slightly with green. 



Material examined. 

 The specimen described. 



Cyclura cornuta (Bonnaterre), 



Plate 10. 



Bonnaterre, Tabl. encyc. erpet., 17S9, p. 40, pi. 4, f. 4. Stejneger, 

 Kept. U. S. N. M. for 1902, 1904, p. 670, f. 122-126. 



