BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 435 



W. M. Mann) shows the extreme of variation in the juvenile stages. 

 The whole dorsal and lateral surfaces are jet black. Eleven, narrow 

 whitish or milky stripes run longitudinally on the back and sides, the 

 median one starting just behind the shoulders, the two adjacent ones 

 coming to an apex about mid-way between the shoulders. The 

 remaining eight stripes are nearly parallel, four arising on each side 

 from the supraoculars, the supraciliaries, the upper and lower corners 

 of the eye, respectively. The ventral surface is pale straw-color, 

 suffused with deep blue on the tail. A slight wash of smoky covers 

 the abdomen. The dorsal surface of the legs are spotted with white. 



Remarks: — The specimen from which the description was taken 

 was an adult male that measured eighty-six millimeters from snout 

 to vent. 



A careful examination of a series of twelve specimens of this species 

 makes it clear that A. taeniura is the adult of A. lineolata. The 

 specimens have a wide range of variation both in color and scutation. 

 According to Cope (Proc. Acad. nat. sci. Phila., 1862, p. 64) the dis- 

 tinguishing characters of A. taeniura are mainly of color and tail 

 scutation. One, however, of the specimens before us has the typical 

 nine white bands,' and keelless caudal plates of A. lineolata. Another 

 specimen shows the extreme variation in this direction by having 

 eleven dorsal bands and keelless caudal scales. Representing the 

 other extreme are six specimens having the characteristic lateral bands 

 and keeled scales of the tail of A. taeniura. The remaining individuals 

 have the coloration of A. lineolata but the keeled caudal scales of 

 A. taeniura. These characters grade into one another and all the 

 intermediate steps are present. Garman (Bull. Essex, inst., 1887, 19, 

 p. 11) noticed the variation in the tail scutation, but pointed out 

 the larger preanals, and the smaller mesotychium scales as character- 

 izing A. taeniura. The larger series of specimens shows that these 

 characters are not at all constant, and among the specimens there 

 are many variations. 



Dumeril et Bibron (Erpet gen., 1839, 5, p. 119) in describing A. 

 lineolata possessed but a single young specimen as shown by their 

 measurements and by Bocourt's figures of the type (Miss. sci. Mex. 

 Rept., pi. xxa, fig. 5). In our specimens, also, it is always the smaller 

 individuals that have the typical A. lineolata characters. 



Habitat: — Confined to Haiti where it is widely spread throughout 

 both the republics. 



