242 MR. A. W. E. O'SHAUGHNESSY ON [Feb. 1, 



AiioUs gracilis, Neuw. Abbild. zur Nat. Brasil. pi. vii. f. 2, 

 Reise, ii. p. 131. 



Rhinosaurus gracilis. Gray, Cat. Brit. Mus. p. 199. 



Anolis nasicus, Dum. et Bibr. Erp. Gener. p. 115. 



The British Museum possesses a single specimen of A. punctatus 

 from Rio Janeiro, which shows the slight differences from A. nasicus 

 indicated in the descriptions of Dumeril and Bibron. Of this latter 

 species there are also four examples, all males, while the other is a 

 female. I cannot resist the conclusion indicated in the above revised 

 synonymy, in which, of course, the older name of Daudin takes 

 precedence.] 



The fine specimen in Mr. Buckley's collection which I formerly 

 named A. nasicus (P. Z. S. 1880, p. 491) does not really belong to 

 that species, only superficially resembling it, and is apparently an 

 undescribed one, which I have pleasure in naming after my friend 

 M. Boulenger : — 



18. Anolis boulengeri, sp. n. (Plate XXIV. fig. 1.) 

 Head elongate ; muzzle raised ; prsefrontal space concave ; anterior 

 upper portions of head covered with rounded or polygonal scales, 

 moderate-sized, slightly convex on the muzzle, flat on the frontal 

 region. Orbital semicircles of very large scales, separated on the 

 vertex by the interorbitals, which have dwindled to one or two very 

 small scales in a single series. A central group of large supra- 

 orbitals surrounded by small rounded or polygonal ones. A single 

 long anterior supraocular continuous with the long canthal scales. 

 Occipital plate large, rounded, very little longer than wide, larger 

 than the ear-opening. Six series of frenals. Seven supralabials ; 

 eight infralabials, with large scales in several rows beneath. Scales 

 of the entire upper surface and sides uniform, minute, granular ; 

 those of the ventral surface very small, rounded, and distinctly 

 carinate. Toes with broad dilatations. Tail long. 



Bright green, with round pearl-like white spots in transverse rows 

 on the back and sides. Lower parts yellowish. 



millim. 



Total length 280 



Length of snout to the eye 11 



Distance from tip of snout to ear-opening .... 21 



„ „ „ fore limb 35 



J. „ „ vent 79 



Length of fore limb 32 



„ third and fourth front toes 8 



,, hind limb 57 



„ third hind toe 9| 



„ fourth hind toe 14 



From Canelos. This species shows a remarkable analogy to J. 

 punctatus in the shape of the head, proportions of the body and 

 coloration, the white spots being very similar. It is, distinguished, 

 however, by the keeled ventral scales, those of A. punctatus being 

 flat and smooth. A peculiarity which I have remarked in all the 



