BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 461 



of scales, median largest; under side of the body with twelve longi- 

 tudinal and thirty-three transverse rows of plates, the scales of the 

 outer row much smaller than the others; preanal plate in a triangle 

 of three large scales, with a smaller scale at each of the basal angles, 

 and another at the base of the median suture; on the lower arm three 

 rows of antebrachials, the outer row widest, the two inner somewhat 

 irregularly arranged, the series extending to the brachials; on the 

 upper arm three rows of brachials all about the same size; on the 

 posterior side near the elbow joint a group of small postbrachials; 

 under side of the thighs covered distally with four, proximalh' with 

 twelve rows of scales; sixteen and seventeen femoral pores; on the 

 under side of the tibia three, or partly four rows of plates, outer 

 widest; upper side of the wrist with regular series of plates, longi- 

 tudinally arranged; outer toe extending not so far as the inner; tail 

 covered with straight, keeled scales ; about fifty scales in the fifteenth 

 ring from the base. 



Coloration: — Dorsal surface pale olive-brown, slightly more red- 

 dish on head; upper and lateral surface of the body, legs, and tail 

 finely speckled with black, the spots confluent posteriorly into reticu- 

 lations; flanks with six or seven longitudinal rows of white spots 

 encircled often with black, the lower three rows on the outer ventrals ; 

 sides of the tail spotted irregularly with black and white; chin and 

 gular region, part of the sides of head and arms black; ventral surface 

 straw-color encroached upon by the spotting of the sides and the dark 

 wash of the throat. ^ 



Variatioji: — An adult female (same data as above) differs from the 

 male in that the dark confluent spots are much less numerous. The 

 general tonality is pale, and the lateral spots are not sharply defined. 

 A young male (same data as above) differs considerably from the 

 adult. Although having the same general ground tone there are no 

 black specklings. On each side there is a broad black stripe, stifled 

 with a few white spots. The outer ventrals have two rows of black 

 spots on either side. There is no black on the chin, throat, or sides 

 of the head. 



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

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



We have examined only the types of this species, M. C. Z. 6079 

 and 6080. There are fifteen specimens in this series, young and old 

 of both sexes. 



Habitat: — Apparently confined to the island of Trinidad. 



