SYNOPSES AND DESCRIPTIONS, 95 
NINIA LIEBMANNI. 
Crersopromus LIEBMANNI Reinhardt, 1860, Vidensk, Medd 1, Kjobenh., 242. 
Head little larger than the neck; muzzle broad. Habit similar to other 
species of this genus. Prefrontals united, entering orbit. Internasals 
separate. Nasal divided, Loreal and anteorbital united. Postorbitals 
and supraocular united. Frontal broad. Temporals 1+2. Labials seven, 
third and fourth in orbit. Infralabials eight, fifth largest. Scales keeled, 
in 17 rows. Ventrals 130. Subeaudals 42 pairs. 
Brown, with a transverse band of light color across the parietals, 
Mexico, 
NINIA SEBAE. 
STREPTOPHORUS SEBAE Dum. & Bibr., 1854, Erp. Gén. VIE, 515. 
NINIA SEBAE Cope, 1860, Pr. Ac. N. Sc., Phil., 340 (name). 
Of moderate size, subeylindrical, belly broad; head rather distinct from 
the neck, crown convex, muzzle broad and rounded; tail short, tapering, 
slender posteriorly. Eye small, pupil round. Head-shields nine. Ros- 
tral small. Internasals and supraoculars very small. Frontal short, 
broad. Prefrontals nearly as large as frontal, entering the orbit. Parie- 
tals large. Nasal in two parts, nostril between. Loreal large, fused with 
anteorbital. Postorbitals two, lower small. Temporals 1+2.  Labials 
seven, third and fourth in orbit, the former extended backward to reach 
it. Infralabials seven, fourth large. Submentals two, anterior twice as 
large as posterior, not in contact with the mental. Seales keeled, in 17 
or 19 rows, outer broad. Ventrals 146 to 151. Anal entire. Subcaudals 
50 to 64 pairs. 
Brownish white, scales tipped with dark. A row of small black spots 
on each side of the back. Head-shields black; labials more or less 
margined with the same color. Separated from the black of the head by 
about three scales there is a black collar on the neck, varying in length, 
extending to the outer rows of scales. Belly and labials glossy yellowish- 
white. Total length 113 inches; tail 24 inches. Mexico and Central 
America. 
NINIA COLLARIS. 
SrrePrornorus SEBAE Var. COLLARIS Jan., 1865, Icon. Ophid. Livr. 12, pl. ITT, fig 6. 
Differs from WV. sebae in that it has no spots behind the broad collar on 
the neck, and in the punctulations on the hinder part of the abdomen, 
A variety of NV. sebae. 
