338 



BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



Our Tortue Island snake was considered by Dunn ^^ to be an 

 example of frenatus. I regard it as catesbyi, since the eye diameter 

 goes exactly twice into the length of the snout, while its scale formula 

 and color pattern are matched by undoubted catesbyi from the main- 

 land of Hispaniola and its rostral plate is identical in proportion with 

 these. Schmidt '^ has recorded as frenatus a snake collected by him 

 at Los Quemados, Dominican Republic, having 171 ventrals and 177 

 caudals. He considers tliis one and our Tortue Island specimen as 

 somewhat aberrant U. frenatus. I believe that the Los Quemados 

 snake is more probably catesbyi with a slightly elongate snout. 



Specimens examined. — As listed in table 64. 



UROMACER WETMOREI Cochran 



Figure 100 



1931. Uromacer wetmorei Cochran, Proc. Biol. Soc. Washington, vol. 44, p. 91. — 

 Barbour, Zoologica, vol. 19, No. 3, p. 135, 1935; BuU. Mus. Comp. Zool., 

 vol. 82, No. 2, p. 155, 1937. 



This island species is related to Uromacer frenatus but differs from 

 it in scale count as well as in the exceedingly narrow frontal. No new 



Figure 100. — Uromacer wetmorei: a. Top of head; b, side of head; c, chin. U.S.N. M. No. 

 83891, type, from Beata Island, Haiti. Twice natural size. 



material has been forthcoming since the original description appeared : 

 " TVpg.— U.S.N.M. No. 83891, an adult male collected on Beata 

 Island, Dominican Republic, on May 13, 1931, by Dr. A. Wetmore 

 and Mr. F. C. Lincoln. Rostral as broad as deep, scarcely visible 

 from above; internasal suture shorter than the prefrontal suture; 

 frontal much shorter than its distance from the rostral, somewhat 

 shorter than the parietals, and widely separated from the preocular; 

 supraocular wider than the frontal; diameter of eye three-eighths the 



•9 Proc. New England Zool. Club, vol. 7, p. 44, 1920. 



1' Bull. Amer. Mus. Nat. Hist., vol. 44, art. 21, p. 19, 1921. 



