630 



REPORT OF NATIONAL MUSEUM, 1902. 



Fig. 87.— Anolis cuvieri. Side of tail 

 at level of fifth spine. 2 x natural size. 

 No. 26843, U.S.N.M. 



mer. Thus, whenever the individual scales can be made out, I find a 

 series of scales between the two rows which form the frontal ridges, 

 while in A. ricordii the scales of the two ridges join along their whole 

 length. In the former the scales which surround the occipital cavity 



on the sides and behind are natter, 

 more polygonal, and distinctly keeled, 

 while in A. ricordii I find them to be 

 undifferentiated, rounded, and tuber- 

 cular, like the others. In A. cuvieri 

 the scales covering the loreal triangle 

 are somewhat larger, especially the 

 lower row, and all the scales on the 

 sides of the head are rougher, while in 

 A. ricordii they are fairly smooth. The 

 scales on the sides of 'the tail are smaller 

 in A. ricordii than in A. cuvieri. At the level of the fifth "ray" 

 there are about 10-14 longitudinal rows and 3—1 vertical rows between 

 the rays, while in A. ricordii we find about 16-20 longitudinal rows 

 and 5-6 vertical rows between the rays. In the latter the scales are 

 also more regularly squarish, forming more regular vertical rows. 

 There may be other minor differences, but the above appear sufficient 

 for distinguishing the two species with comparative ease. 



Any possible uncertainty as to 

 the exact applicability of the name 

 A. cuvieri to the Porto Rican spe- 

 cies is now set at rest, thanks to the 

 kindness of Prof. Leon Vaillant 

 and. his assistant, Dr. Mocquard, at 

 the Museum d'Histoire Naturelle 

 in Paris. In order to satisfy my- 

 self on this question, I sent them 

 copies of figs. 87 and 88, repre- 

 senting the pholidosis of the tail 

 of both species. After a careful 

 comparison with the types, Dr. 

 Mocquard wrote, under date of 

 February 21, 1901: 



The type specimen oi Anolis vellfer Cuv. (=An. cuvieri Merrem) agrees exactly 

 in the pholidosis of the tail with the drawing of No. 26843 [fig. 87]. Between the 

 fourth and fifth or fifth and sixth spines of the caudal crest the scales form three or 

 four vertical rows and two longitudinal rows. On the lateral aspect of the tail, as 

 also indicated on the drawing, they are disposed in verticils, in each of which there 

 may be counted ten more or less irregular longitudinal rows of scales. The vertical 

 rows do not appear quite as regular as the longitudinal series. On the other hand, 

 the drawing of No. 12108 [fig. 88J corresponds to the pholidosis of the tail of Anolis 

 ricordii D. B. (E'rpet. gen., t. iv, p. 167). 



Fig. 88. — Anolis ricordii. Santo Domingo. 

 Side of tail at level of fifth spine. 2 x nat- 

 ural size. No. 12108, U.S.N.M. 



