SYNOPSES AND DESCRIPTIONS. 19 
Posterior upper maxillary teeth longer, grooved. Anterior teeth equal. 
Crown-shields regular. Nasal divided. A loreal. Prcocular one, some- 
times two. Two postoculars. Scales smooth, lustrous, in 19 rows, varying 
rarely to 17 or 15. Anal entire. Subeaudals 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 cLorLiA Daudin, 1799, Hist. Rept. VI, pl. 78, p. 330. 
OxyRHOPUS CLOELIA Giinther, 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 dotted 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. 
Duméril & Bibron, 1854, Erp. Gén. VIL, 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 
