BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 449 



and on either side of them largest; on the area between the two throat 

 folds a small group of enlarged scales formed of five transverse rows 

 of about six or seven scales each; under side of the body with fourteen 

 longitudinal and thirty-six transverse rows of plates; preanal plates 

 irregularly arranged, the three largest forming a triangular group 

 crowded slightly out of the median line by two or three smaller ones; 

 on the lower arm a single row of four or five wide plates breaking up 

 into granules before reaching the elbow; on the upper arm three or 

 four rows of brachials, median largest, others grading into the granules 

 of the arm; on the posterior side near the elbow a small group of 

 sHghtly enlarged postbrachials ; under side of the thighs covered dis- 

 tally with five, proximall^- with ten or twelve rows of scales, outer row 

 widest; thirty-eight and thirty-nine femoral pores; on the under 

 side of the tibia two rows of large and three of small scales, outermost 

 considerably larger than the other two ; upper side of the wrist with a 

 regular longitudinal series of plates covering the outer part of wrist 

 and hand only; outer toe extending a little further than the inner; 

 tail covered with straight keeled scales; about thirty-seven scales 

 in the fifteenth ring from the base. 



Coloration: — Dorsal surface dark olive-green slightly tinged in life 

 with russet, head lighter and more reddish olive, the sides of which 

 are almost rosy in life; numerous black pencilings on the back and 

 sides arranged in a very wide median band, and two narrower more 

 distinct lateral bands running the length of the body but fading off 

 on the tail; chin and throat pale flesh-color in sharp contrast to the 

 rest of the under parts which are blue-gray; the pale throat almost 

 brilliant in life serving to distinguish this form from all others except 

 perhaps the closely related A. erythrops. 



Variation: — The females are similar to the males except that the 

 dark pencilings on the back are more numerous and distinct, forming 

 almost a network of black lines having a generally transverse direction. 

 There is a suggestion of a pale line anteriorly on each side of the body. 

 This becomes more distinct in the young and borders a dark lateral 

 band on the upper side while a similar white line forms a lower mar- 

 gin to the stripe. Generally speaking the young are like the adult 

 females. One specimen, however, (M. C. Z. 10376) has a pale throat 

 which is not in sharp contrast to the pale blue-gray under parts, and 

 there are no ultramarine blue spots on the outer ventral plates as found 

 in the adults. 



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

 ured one hundred and twelve millimeters from snout to vent. Old 

 males often grow much larger than this specimen. 



Habitat:— Apparently confined to the island of St. Christopher 

 where it is common about the town of Basse Terre especially on the 

 low-lying uncultivated fields to the west of the settlement. 



