SYNOPSES AND DESCRIPTIONS. 19 



Posterior upper maxillary teeth longer, grooved. Anterior teeth equal. 

 Crown-shields regular. Nasal divided. A loreal. Preocular one, some- 

 times two. Two postoculars. Scales smooth, lustrous, in 19 rows, varying 

 rarely to 17 or 15. Anal entire. Subcaudals in two rows. 



Light reddish-white; scales more or less tipped with brown; 



a yellowish collar cloelia. 



Reddish-white, with about thirty black rings around the body. 



doliatus. 



OXYRHOPUS CLOELIA. 



Coluber cloelia Daudin, 1799, Hist. Sept. VI, pi. 78, p. 330. 

 Oxyrhopus cloelia GiXntJier, 1858, Cat. Col. Serp., 189. 



Elongate, slightly compressed, body tapering toward the tail; head 

 larger than the neck, depressed, rounded, crown flattened, muzzle broad; 

 tail rather less than a fourth of the total, tapering. Eye moderate, pupil 

 erect. Mouth-cleft but slightly curved. Crown-shields nine, broad. Ros- 

 tral as high or higher than broad, bent back in a blunt angle between the 

 internasals. Prefrontals broad, bent down on the side of the face. Frontal 

 broad, angle between the parietals a little less than right. Parietals large. 

 Nasal in two parts, anterior acute-angled between the rostral and first 

 labial. Loreal small, narrow in front. Oculars 1 — 2. One temporal in 

 contact with postoculars, a second below it in a notch between the labials. 

 Labials seven to eight, third and fourth or fourth and fifth in orbit, the 

 two preceding the last larger. Infralabials eight to nine, fifth larger. 

 Submentals two pairs, hinder smaller. Scales smooth, lustrous, with 

 two pores, in 19 rows. Ventrals 242. Anal entire. Subcaudals 77 pairs. 



Light reddish-white, whiter below. Tips of scales slightly clotted with 

 brown. Crown-shields and sides of face dark brown. A triangular brown 

 patch on the back and sides of the neck, in front of which there is a yellow 

 collar which extends forward under the eye on the labials. Throat and 

 chin uniform white. Behind the dark patch on the neck the scales become 

 gradually lighter. Central America. 



Oxyrhopus doliatus. 



Dwmeril & Bibron, 1854, Erp. Gen. VII, 1020. 



Elongate, compressed; head distinct from the neck, crown flat, broad 

 behind; tail moderate, less than one fourth of the total, tapering. Snout 

 short, broad, rounded. Eye moderate, pupil elliptical, erect. Posterior 



