SYNOPSES AND DESCRIPTIONS, 65 
Scarlet in life, reddish-yellow in alcohol, with 20—25 pairs of narrow 
black rings, those of each pair separated by a yellow band. The space 
between the pairs is nearly equal to that occupied by the pair and the 
included yellow. The black rings diverge and become narrow toward the 
belly, which in cases they do not cross. Occasionally the rings of different 
pairs unite on the abdomen. The first pair is incomplete, and does not 
encircle the neck, the anterior ring crosses the hinder extremity of the 
parietals, and commonly sends forward on the frontal an oblong or square 
extension, it stops at the angle of the mouth, The yellow rings widen on 
the ventral surface. Southeastern States. 
var. ELAPSOIDEUS. 
Loreal shield absent. Southeastern States. 
OPHIBOLUS TRIANGULUS, pl. V, fig. 1. 
CoLuBER TRIANGULUM Boie, 1827, Isis, 537. 
Moderately stout, subeylindrical; head small, little broader than the neck, 
depressed, crown slightly convex, snout comparatively broad; tail short, 
one sixth to one seventh of the total. Eye small, over the third and 
fourth labials, pupil round. Mouth-cleft deep, not much curved. Crown- 
shields nine, broad. Frontal broader anteriorly. Internasals small.  Pre- 
frontals bent down on the sides of the head. Rostral broader than high, 
convex. Nasal in two parts, nostril between. Loreal low. Oculars 1—2, 
lower small. Temporals 2+2 to 3. Labials seven, posterior three larger. 
Infralabials nine (9—10), fifth large. Submentals two pairs. Seales 
smooth, lozenge-shaped, ends rounded, in 21 rows, outer as broad as long. 
Ventrals 200—215 (185—215). Anal entire. Subcaudals 45—55 pairs. 
Brownish-yellow (more or less red in life), greyish on the flanks, with 
broad black-edged blotches of reddish-brown or brownish-red. The yellow 
separating the dorsal series is narrower than the blotches, and widens 
toward the flank, where in most varieties it bifureates, and with the oppo- 
site band surrounds a medium-sized, light-centered blotch. Occasionally 
there are two series of alternating blotches on the flank. Belly yellowish, 
with quadrate black blotches, often more black than yellow. Back of 
Mem.—vou. 1—5 
