BARBOUR AND NOBLE: THE GENUS CYCLURA. 147 



arranged; five infralabials to the middle of the eye; a single row of 

 very large, keeled malar scales, and two anterior ones in contact with 

 the infralabials, the rest separated from the infralabials by one or two 

 rows of small scales; dorsal and ventral scales small, about eleven 

 contained in the vertical diameter of the tympanum ; from the nuchal 

 fold along the median line of the neck and back a row of low, blunt 

 spines, the largest slightly over a centimeter high; this crest inter- 

 rupted on the shoulders and rump, thirty-seven spines between these 

 two points; upper surface of limbs with slightly imbricated, keeled, 

 posteriorly pointed scales considerably larger than the body-scales; 

 scales covering the upper surface of the fore arm and tibia much larger 

 than those covering the upper arm and femur; on the upper arm about 

 eight, on the lower about five of these scales to the vertical diameter 

 of the tympanum; a single series of twenty-two femoral pores; 

 inner side of second toe with one comb, of third toe with two combs, 

 each consisting of three lobes ; tail compressed, covered with obliquely 

 keeled scales in vertical rows, forming faintly indicated verticils; 

 tail surmounted by a serrated crest similar to the body-crest but 

 formed of slightly larger spines. 



Coloration: — Ground tone of dorsal surface brownish gray; whole 

 dorsal surface sprinkled with pale, yellowish green, the spots very 

 abundant and partly confluent posteriorly; flanks marked by four 

 broad, vertical stripes of pale bluish gray; each stripe edged dark 

 slaty gray, sides and upper surface of the head broadly blotched with 

 pale bluish yellow; sides of the tail with a series of irregular vertical 

 stripes of bluish gray becoming regular and evenly spaced posteriorly, 

 ventral surface somewhat lighter than the upper surface. 



Variation and remarks: — A very young specimen, a female meas- 

 uring only 115 millimeters from snout to vent, collected at Belig, Cabo 

 Cruz, Cuba, by O. Tollin and now in the collection of C. T. Ramsden 

 varies greatly in color from the adult, but the lepidosis of the speci- 

 men is very similar to that of the adult. In this example the ground 

 tone of the dorsal surface is grayish blue tinged with greenish; along 

 the middle line of the back there is a series of broad white crossbars 

 edged broadly before and behind with black; these black and white 

 crossbars are continued on the sides as a series of wavy stripes, each 

 stripe pointing obliquely backward; the ventral surface is paler than 

 the dorsal, and is covered by broken continuations of the lateral stripes. 



