SYSTEMATIC ACCOUNT OF THE SPECIES. 133 



24. Anolis equestris Merrem. 



Plate 14, fig. 5. 



Camaleon; Camaleon verde; Chipojo. 



Diagnosis: — A large, usually green, lizard with the upper surface of the 

 head developed into a casque, studded with rough tubercles, also with a greatly 

 developed gular pouch which in hfe is a vivid chrome-yellow. 



Description; — Adult M. C. Z. 7,906. Cuba: Madruga, Spring of 1910. 

 Thomas Barbour. 



Head large, top of head flat, wath extensive depressions on prefrontal and 

 occipital region; the scales of the latter area being small and roughly tubercu- 

 lated, while those on the snout are larger and much more heavily corrugated; 

 a group of flat plate-like scales on each supraorbital region; supraorbital semi- 

 circles prominent thin laminar scales set side by side, their long axes parallel; 

 the circles separated by three or four rows of small tubercular scales ; the series 

 of scales formmg the supraorbital semicircles continued posteriorly into ridges 

 of prominent scales which surround the occipital depression; canthal scales 

 much enlarged and very heavily tubercular; five or six loreal rows, the scales 

 of the rows next to the supralabials the largest; one row of large suboculars, 

 the posterior two of which are keeled; ten supralabials to below the centre of 

 the eye; temporals flat; ear opening small, round, back and sides covered 

 with uniform flat or slightly swollen scales which are separated from each other 

 by a narrow zone of soft skin, many of the scales tend to a roimded f oim ; on 

 the median line of the neck and back a series of spine-like scales forming a weak 

 nuchal and dorsal crest which is continuous on the sacral region with caudal 

 crest; ventral scales smooth and tending to imbricate smaller than the scales 

 on the sides; scales on fore and hind Umbs smooth and pavement-hke; digital 

 expansions greatly developed, about thirty-seven lamellae under second and 

 third phalanges of the fourth toe; tail strongly compressed with a caudal crest 

 similar to the dorsal; gular appendage very large, with distinct rows of small 

 flat scales on the naked skin, the edge rounded, thickened and scaly; no enlarged 

 preanal plates. 



Colour (in Ufe): — Uniform emerald-green; sometimes changing to brown- 

 ish or even ahnost black; sometimes with vertical brown bars on the sides of 

 the body, the ground-color being green. A yellowish streak beginning above 



