330 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 

 KEY TO THE SPECIES OF UROMACER 



a 1 Snout twice as long as eye; rostral twice as broad as deep. 



ft 1 . Scales 17-13 or 11; ventrals 162-176 catesbyi (p. 330) 



b 2 . Scales 19-11; ventrals 181-203 scandax (p. 334) 



a 2 . Snout 2}£ times as long as eye; rostral as broad as deep. 



b l . Scales 17-13 or 11; ventrals 185-194 frenatus (p. 335) 



b 2 . Scales 17-11 in male; ventrals 177 wetmorei (p. 338) 



a 3 . Snout 3 times as long as eye; rostral deeper than broad. 



b 1 . Scales 17-13 or 11; ventrals 193-205 dorsalis (p. 339) 



b 2 . Scales 19-13 or 11; ventrals 192-212 oxyrhynchus (p. 341) 



UROMACER CATESBYI (Schlegel) 



Figure 97 



1837. Dendrophis catesbyi Schlegel, Essai sur la physionomie des serpens, vol. 2, 

 p. 226. 



1854. Uromacer catesbyi Dumeril and Bibron, Erp6tologie g6ne>ale, vol. 7, p. 721, 

 pi. 83, fig. 2. — Jan, Iconographie g6nerale des ophidiens, livr. 33, pi. 3, fig. 2, 

 1869. — Boulenger, Catalogue of the snakes in the British Museum, vol. 2, 

 p. 115, 1894. — Meerwarth, Mitth. Naturh. Mus. Hamburg, vol. 18, p. 9, 

 1901. — Barbour, Bull. Mus. Comp. Zool., vol. 44, art. 2, p. 331, 1914; 

 Zoologica, vol. 11, No. 4, p. Ill, 1930; vol. 19, No. 3, p. 135, 1935; Bull. 

 Mus. Comp. Zool., vol. 82, No. 2, p. 155, 1937.— Dunn, Proc. New England 

 Zool. Club, vol. 7, pp. 42, 44, 1920.— Schmidt, Bull. Amer. Mus. Nat. Hist., 

 vol. 44, p. 19, 1921.— Cochran, Proc. U. S. Nat. Mus., vol. 66, art. 6, p. 13, 

 1924; Proc. Biol. Soc. Washington, vol. 41, p. 54, 1928; Occ. Pap. Boston 

 Soc. Nat. Hist., vol. 8, p. 185, 1934. — Amaral, Mem. Inst. Butantan, vol. 4, 

 p. 162, 1929. — Mertens, Senckenbergiana, vol. 20, No. 5, p. 342, 1938. 

 Publ. Inst. Cient. Domfnico-Aleman, vol. 1, p. 94, 1939. — Boker, Publ. 

 Inst. Cient. Dominico-Aleman, vol. 1, p. 18, 1939. 



1858. Ahaetulla catesbyi Gunther, Catalogue of colubrine snakes in the collection 

 of the British Museum, p. 154. 



1879. Leptophis catesbeyi Cope, Proc. Amer. Philos. Soc, vol. 18, p. 273. 



This species, far from being the rarity that Dr. Barbour believed 

 it to be when he mentioned it in his "Zoogeography of the West Indies," 

 is, after oxyrhynchus, probably the most numerous of the genus. 



Description. — U.S.N.M. No. 55036, Samana Peninsula, Santo 

 Domingo; 1916; W. L. Abbott, collector. Rostral a little broader 

 than high, scarcely visible from above; internasal suture shorter than 

 the prefrontal suture; frontal as long as its distance from the rostral, 

 shorter than the parietals, widely separated from the preocular; 

 supraocular about as wide as frontal; diameter of eye one-half the 

 length of the snout; nasal semidivided, longer than its distance from 

 the eye; loreal small, a little broader than high; one large preocular; 

 two postoculars, the upper much the larger; temporals 1 + 1 on the 

 right side, 1+2 on the left; eight supralabials, second in contact with 

 nasal, prefrontal and loreal; third, fourth, and fifth supralabials 

 entering the eye; 10 lower labials, the first in contact with its fellow 

 behind the symphysial; the anterior chin shields in contact with five 

 lower labials, and the posterior pair, which are the longer, with two 



