452 bulletin: museum of comparative zoology. 



Variation: — The females and young males are very different from 

 the adult males in being generally grayer and profusely dappled with 

 light blue-gray. One specimen, an adult female (same data as above) 

 is generally olivaceous gray above. Two indistinct brown bands run 

 the length of the flanks. The sides and upper surface of the body, 

 appendages and most of the tail is profusely spotted with light gray, 

 while the under surface is bluish except for the gular folds which are 

 suffused with black. A young specimen (same data as above) is 

 identical with the female. Oddly enough 'the lateral bands are even 

 less distinct than in the adult. 



Remarks: — The description was made of an adult male that meas- 

 ured one hundred and thirty -five millimeters from snout to vent. 



This species is a noteworthy exception to the general rule that the 

 young tend more to be distinctly striped than the adults. 



We have examined only the ten types of this species the data for 

 which is given before the description. In this series of specimens 

 there are young and adults of both sexes. 



Habitat: — Apparently confined to the island of Montserrat. The 

 Ameiva from the neighboring island of Antigua is unknown, if one 

 still occurs there. 



AmeivaIatrata Garman. 



Description:— P^dvXt female; Type M. C. Z. 6084. Redonda 

 Island, B.W.I. ; 1880; W.J.Branch. 



Rostral forming about a right angle behind; nostril on posterior 

 border of anterior nasal; anterior pair of nasals just in contact behind 

 the rostral; frontonasal a trifle longer than wide, just touching the 

 loreal; prefrontals broadly in contact and partly surrounding a small 

 scale posteriorly, frontal in contact with the first three supraoculars; 

 a pair of frontoparietals in contact, anteriorly, with the third supra- 

 ocular; seven occipitals, rather small, irregular and in a transverse 

 row, the two adjacent to the median smallest, the two outermost larg- 

 est; eight supraciliaries ; four supraoculars, the first separated from 

 the loreal; three posterior supraoculars separated from the supracilia- 

 ries by a single, part double row of granules; six large supralabials; 

 five inf ralabials ; between infralabials and chin-shields a wedge of one 

 or two rows of scales extending anteriorly to the first chin-shield; 

 chin and throat covered with minute granules, an indistinct band of 

 scarcely larger ones extending aci'oss the middle, the median ones 

 slightly largest ; on the area between the two throat folds several rows 

 of large hexagonal scales; under side of the body with twelve longitudi- 



