^921^] BARBOUR — REPTILES FROM OLD PROVIDENCE 83 



Ameiva panchlora sp. nov. 



Type, no. 13,879 A, U. S. N. M., from Old Providence Island, Colombia, 

 Albatross expedition of 1884. Two paratypes, catalogued under the same 

 number, one of which is now in the Museum of Comparative Zoology. 



Rostral forming a little less than a right angle behind; nostril between 

 the two nasals; anterior pair of nasals broadly in contact; frontonasal a 

 very little longer than wide, in contact with the loreal; praefrontals 

 broadly in contact; frontal broadly in contact with the first two supra- 

 oculars; and just in slight contact with the third; one pair of fronto- 

 parietals; five occipitals, the second and fourth of the row reaching slightly 

 anterior and the first and fifth the smallest; six or seven super ciliaries, the 

 first very much the largest; four supraoculars, the first separated from the 

 loreal, one row of granules separating the three posterior supraoculars from 

 the superciliaries and three rows of granules separating the fourth and half 

 of the third supraocular from the mesial head scales; seven upper labials; 

 five large lower labials; between infralabials and chin shields a row of 

 granules extends from behind forward to about the anterior third of the 

 third lower labial ; chin and throat covered with very small almost uniform 

 granules except those over a wide zone extending across the middle of the 

 throat, and these granules are slightly enlarged; a number of enlarged rows 

 of scales between the two throat folds, the median two or three rows larg- 

 est; under side of the body with twelve transverse rows (the outer row on 

 each side reduced in size), and with thirty-two rows of transverse scales; 

 preanal plates in a triangle of about seven enlarged scales; on the lower 

 arm three rows of antebrachials, the outer vastly the widest; on the upper 

 arm a single, median, much enlarged row, well separated from the ante- 

 brachials, and flanked by a much smaller row on each side; a group of small 

 postbrachials near the elbow; under side of thigh with about five rows of 

 scales distally, and up to about fifteen proximally; about eighteen femora! 

 pores (17-19) on the under side of the tibia four, proximally five, rows of 

 scales; the outer toes reaching to the same point; tail covered with straight 

 keeled scales; about forty-six scales on the fifteenth annulus from base. 



Coloration. — Dorsal surface light olive green, three indistinct rows of 

 dark blotches, the median row tending to double and anastomose with the 

 lateral series; upper surfaces of legs and arms with indistinct wavy darker 

 markings; sometimes some indistinct light lateral spots, very irregularly 

 distributed. Under surface very dark, especially in adult males. 



The three specimens before me are very similar in coloration 

 and in pattern. The coloration may be misleading, but the 

 pattern is a very valuable taxonomic factor in Ameiva. There 

 is some variation in squamation, and in the largest example the 



