72. UEOMACEE. 115 



outer keeled ; smooth on the tail. Ventrals 1G3. Ollve-grccn 

 above, the keels black ; vertebral scales dotted with black on the 

 sides ; a black streak on each side of the head, behind the eye ; pale 

 green beneath. 

 Bogota. 



72. UROMACER. 



Dendrophis, part., Schleg. Phys. Serp. ii. p. 220 (1837). 



Uroiiiacur, iJum. ^- Bibr. Mem. Ac. Sc. xxiii. 1853, p. 478, and Erj). 



Gen. vii. p. 719 (1854) ; Ja7i, Elenco sid. Ofid. p. 87 (1863). 

 AhietuUa, part., Gunth. Cat. Col. Sn. p. 151 (18.58). 



Maxillary teeth 16 to 20, increasing in size posteriorly, the two 

 last very large and separated from the others by a wide interspace ; 

 anterior mandibular teeth longest. Head elongate, distinct from 

 neck ; eye ' moderate, with round pupil, Eody slender, very 

 elongate ; scales narrow, lanceolate, smooth, with apical pits, in 1 7 

 or 19 rows; ventrals without or with a very obtuse lateral keel. 

 Tail very long ; subcaudals in two rows. 



Santo Domingo, West Indies. 



Synopsis of tlie Species. 



Snout t^v^ce as long as the eye, truncate at the 



end ; rostral twice as broad as deep ; scales 



in 17 rows ; ventrals 163-176 1. cccteshi/i, p. 115. 



Snout twice and a half as long as the eye, 



subacuminate ; rostral as broad as deep ; 



scales in 17 rows ; ventrals 182-193 .... 2. frenatus, p. 116. 

 Snout thrice as long as the eye, acutely 



pointed; rostral deeper than broad; scales [p. 116. 



in 19 rows; ventrals 192-210 3. oxyrhynclum, 



1. Uromacer catesbyi. 



Dendrophis catesbyi, Schley. Phys. Serp. ii. p. 226 (1837). 

 Uromacer catesbyi, Bum. Sj- Bibr. vii. p. 721, pi. Ixxxiii. fig. 2 



(1854) ; Jan, Icon. Gen. 33, pi. iii. fig. 2 (1869). 

 Ahfetulla catesbyi, G'linth. Cat. p. 154 (1858). 

 Leptophis catesbyi, Cope, Proc. Am. Philos. Sac. xviii. 1879, p. 273. 



Snout about twice as long as the eye, much depressed and 

 truncate at the end. Eostral twice as broad as deep, scarcely 

 visible from above ; internasals longer than broad, shorter than the 

 pra;frontals ; frontal twice as long as broad, as long as its distance 

 from the end of the snout, slightly shorter than the parietals ; nasal 

 long and narrow, divided or semidivided ; prefrontal in contact with 

 the second labial ; a small loreal between the prseocular aud the 

 praefrontal ; one or two proe- aud two or three postoculars ; tem- 



i2 



