166 THE HERPETOLOGY OF CUBA. 



strictly terrestrial and feeds principally on ants although it wiU rarely climb 

 even into the lowest bush or upon the stalks of grass to seciire its prey; on one 

 occasion the junior author saw one climb about eighteen inches into a small 

 malvaceous bush at Guantanamo. The structure of its feet with the sharp 

 projecting lateral scales marks a transition stage toward the condition seen in 

 such genera as Uma, among iguanids or the South African Ptenopus among 

 geckonids. 



44. Cyclura macleayi Gray. 



Plate 11, fig. 2, 3. 



Iguana. 



Diagnosis: — The largest Cuban land reptile, an enormous Uzard with 

 prominent gular pouch, a nuchal and dorsal crest of spines and a powerful 

 muscular tail armed with prominent whorls of heavily keeled scales. 



Description: — \d\Ai d' M. C. Z. 11,050. Cuba: Pinar del Rio; Valley 

 of Luis Lazo, April, 1915. Carlos de la Torre and Thomas Barbour. 



Rostral as wide as the mental, broadly in contact with nasals; nasal large, 

 somewhat pentagonal, perforated by a large ovoid nostril ; each nasal in contact 

 with a large, elongate supranasal and a squarish postnasal; nasals and supra- 

 nasals broadly in contact on the middle of the snout; the pair of supranasals 

 immediately followed by two pah" of large prefrontals, the posterior pair several 

 times as large as the anterior pair; both pairs of prefrontals broadly in contact 

 in the middle line of the snout ; a few granules on the crossing point of the two 

 prefrontal sutures; aU these scutes covering the upper surface of the snout 

 shghtly swollen and convex; between prefrontals and the scarcely indicated 

 supraocular semicircular two irregular rows of scales, the anterior row formed 

 of scales several times as large as those in the posterior one; immediately fol- 

 lowing the posterior row a large rounded median scale; supraorbital semicircle 

 differentiated from the supraocular disc but the scales on the outer and anterior 

 portion of the supraocular region smaller than the others; semicircles separated 

 by two, partly by three rows of large scales; occipital located with its posterior 

 end on a line with the posterior end of the semicircle; scales of the occipital 

 region enlarged and swollen, the outer ones largest; about two rows of scales 

 between the occipital and the semicircles; two or three rows of superciUary 

 shields not clearly cUfferentiated, canthus rostralis consisting of three large 

 scales, the first elongate and in contact with two supraciliary scales that are also 

 elongate; all of these scales on the top of the head swollen, shghtly keeled, and. 



