84 SYNOPSES AND DESCRIPTIONS. 
FIcIMIA MACULATA. 
OxyRHINA MACULATA Jan, 1862, Prodr. Icon. Gin. Ofid., pt. I, 61. 
Subcylindrical; head not distinct from neck, subconical, slightly de- 
pressed, muzzle produced. Snout long, rostral conical. Eye moderate, 
pupil round. Mouth-cleft deep, curved. Prefrontals and internasals 
united. Frontal broader forward, hexangular. Nasal entire. <A loreal, 
sometimes absent. One anteorbital. Postorbitals 1 to 2. Temporals 
142. Labials 6 to 7, the two preceding the last more or less wedged. 
Infralabials 6 to 7, fourth large, anterior four in contact with the sub- 
mentals. Two pairs submentals, anterior larger. Seales smooth, short, 
broad, in 17 rows. Ventrals 125—131. Anal bifid. Subcaudals 28 to 
36 pairs. 
-Brownish, more or less punctulate, with a dorsal series of irregular 
spots, the anterior of which are somewhat elongate. Flanks marked with 
brown, as if the dorsal spots had continued downward and broken up. 
Belly light, with spots of dark irregularly placed in a series on each side, 
(Jan.) Mexico, 
FICIMIA VARIEGATA. 
AMBLYMETOPON VARIEGATUM Giiinther, 1858, Cat. Col. Snakes, 7. 
Moderate; head not distinct, rounded, muzzle not elongate; tail rather 
short, tapering. Eye moderate, pupil sub-elliptical. Rostral bent upward, 
with a convex ridge, not tapering behind, separating the prefrontals. 
Internasals and prefrontals united. Frontal large, seven-sided. Oculars 
1—2. No loreal. Labials seven, third and fourth in orbit. Anterior 
temporal elongate. Scales smooth, nearly square, in 17 rows. Ventrals 
151. Anal bifid. Subcaudals 37 pairs. 
Back reddish-white, with 56 black narrow cross-bars, two on the neck 
larger than the remainder. Head with symmetrical black markings. 
Sides black spotted. Belly uniform whitish. (Giinther.) Mexico. 
FICIMIA OLIVACEA. 
Gray, 1849, Cat. Snakes Brit. Mus., 80. 
Head moderate, rather depressed; body subeylindrical; tail tapering. 
Rostral large. Internasals and prefrontals fused, separated by the rostral. 
Loreal and prefrontals united. Supraciliary small, triangular. Frontal 
and parietals large. Nasal triangular, grooved behind the nostril. Eyes 
small, pupil round. Scales smooth, lustrous, broad, rounded at the tip. 
Blackish-olive; lips, chin, and beneath pale yellowish, (Gray.) Mexico, 
