478 bulletin: museum of comparative zoology. 



teriorly by many small ones; four supraoculars, the second divided 

 longitudinally into three parts, the last two considerably larger than 

 the anterior ones; two posterior supraoculars separated from the 

 supraciliaries by a single row of granules; six large supralabials; five 

 infralabials; between infralabials and chin-shields a wedge of a single 

 row of scales extending anteriorly to the second pair of infralabials; 

 chin and throat covered with minute granules, a band of slightly 

 larger ones extending across the middle; on the area between the two 

 throat folds a single row of very large scales; under side of the body 

 with eight longitudinal rows, outer row much narrower than the 

 others and twenty-six transverse rows of plates; a pair of large pre- 

 anal plates arranged one ahead of the other in the mid-region and sur- 

 rounded by a series of small scales; on the lower arm a single row of 

 large antebrachials becoming double proximally; on the upper arm 

 a single row of large brachials continuous with the antebrachials; 

 on the posterior side near the elbow joint a single row of large post- 

 brachials; under side of the thighs covered with three rows of large 

 plates breaking up proximally into six or eight rows ; fourteen femoral 

 pores; on the under side of the tibia two rows of scales, outer about 

 twice as large as the inner; upper side of the wrist with one or two 

 transverse series of large scales; outer toe extending about as far as 

 the inner; tail covered with straight, keeled scales, dorsally strongly 

 keeled; about seventeen scales in the fifteenth ring from the base. 



Coloration: — Dorsal surface dark olive-brown; on each side a dark 

 brown or blackish band, bordered above and below by a light stripe, 

 the three stripes running the length of the body from the eye to the 

 middle of the tail ; ventral surface pale blue-gray suffused with straw- 

 color. 



Remarks: — The description was made of a half grown male, the 

 only specimen examined, that measured eighty -six millimeters from 

 snout to vent. 



Ameiva bridgesii (Cope). 



Description: — Adult male; M. C. Z. 6988. Gorgona Island, Colom- 

 bia; 1905; W. W. Brown, Jr. 



Rostral forming about a right angle behind; nostril between the 

 two nasals; anterior pair of nasals broadly in contact behind rostral; 

 frontonasal a trifle longer than wide separated from the loreal; pre- 

 frontals keeled, separated by six or seven intercalated, keeled scales 

 forming part of a series which divides the frontal and frontoparietals ; 

 frontal formed of about ten irregularly arranged keeled scales ; fronto- 

 parietal and occipitals formed of numerous irregularly arranged, small 

 keeled scales, the two scales in the median occipital region largest; 



