484 PROCEEDINGS OF THE ACADEMY OF [1894. 



dominal scales smooth. The affinities are with the A. cy botes Cope, 

 of San Domingo, but the scales of the sides and most of the back 

 are twice as large, and the median dorsal rows are not abruptly 

 larger than those adjoining. Frontal ridges low, and median basin 

 shallow. Tibia shorter than length from muzzle to ear. Scales of 

 muzzle moderate, smooth. Superciliary rows separated by one row 

 of scales except for a short distance, where they are in contact. 

 Supraoculars 13-15, smooth, those of internal and adjacent rows 

 subequal, the whole separated from the supraorbitals by small scales 

 of different sizes. Occipital plate equal auricular meatus, separated 

 from supraorbitals by three rows. Five loreal rows ; four canthal 

 scales, the latter connected Avith anterior supraorbital Jjy two rather 

 large scales, which are separated by four rows of scales. In front of 

 the basin there are nine rows of scales counting across the muzzle, 

 of which the median row is much enlarged. In A. cybotes there are 

 but two or three rows in the frontal basin, and the middle row on the 

 muzzle is not enlarged. Twenty-four lamellae under the second and 

 third phalanges of posterior fourth toe. Fan of male reaching to 

 between humeri. Male with postanal plates rudimental. 



Color ashen, thickly mottled with small, black spots on the sides 

 and back, and upper surfaces of limbs. Spots smaller on nape. 

 A black band from nostril through lower eyelid to ear. Fan green- 

 ish-black in alcohol. In a smaller specimen, perhaps a female, as 

 the fan is small, there is a dark band across the supraoculars, and 

 the occiput is reticulated with black. The median dorsal region is 

 covered by a dark brown baud. 



Total length of male, 195 mm. ; do. of head to ear, 10 mm.; do. 

 to vent, 72 mm.; do. of fore limb, 31 mm.; do. of hind limb, 55 

 mm. ; of hind foot, 23 mm. 



This species differs from its nearest ally, the A. cybotes, in the 

 larger scales, the different arrangement of the muzzle plates, the 

 more numerous supraorbitals, and mostly widely in the coloration. 

 In size it exceeds that species. It is dedicated to my friend Mr. 

 J. Percy Moore, Instructor in Zoology and Comparative Anatomy in 

 the University of Pennsylvania, who captured the type specimens. 



"This handsome species was found only on Great Inagua where it 

 is quite common. They are distinguishable at sight, during life, 

 from, any species met with elsewhere by their comparatively large 

 size and pale gray-brown spotted color, which on occasion changes to 



