75. LIoPHtIs. 129 
1. Liophis pygmens. 
Liophis pygmeeus, Cope, Proc. Ac. Philad, 1868, p. 103. 
Head slightly distinct from neck, ovate, narrowed in front ; snout 
slightly prominent. ostral much broader than deep, just visible 
from above; internasals broader than long; frontal large, elongate, 
longer than its distance from the tip of the snout; supraoculars 
rather narrow ; loreal subquadrate ; one pree- and two postoculars ; 
temporals 1+2 ; seven upper labials, third and fourth entering the 
eye; chin-shields equal. Scales in 17 rows. Ventrals 128; anal 
divided ; subcaudals 31. Above deep olive; leaden on the sides 
and the ends of the ventral shields; a black line from the eye to 
the angle of the mouth; a black occipito-nuchal collar, directed 
backwards ; a series of black spots on each side, confluent into a 
band from the middle of the body to the end of the tail; below 
uniform yellow. 
Total length 185 millim. ; tail 30. 
Napo or Upper Maranon. 
2. Liophis triscalis. 
Seba, ii. pl. xxxvili. fig. 3 (1735). 
Coluber triscalis, Zinn. S. N. i. p. 885 (1766) ; Daud. Rept. vi. p. 877 
(1803). 
Dromicus triscalis, Dum. § Bibr, vii. p. 672 (1854); Giinth. Cat. 
p- 151 (1858). 
Liophis triscalis, Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 299, and 
Icon. Gén. 18, pl. iv. tig. 1 (1866). 
? Liophis rufus, Jan, J. c. p. 301. 
Eye rather small. Rostral a little broader than deep, well 
visible from above; internasals as long as broad, as long as or 
shorter than the prefrontals; frontal about once and a half as long 
as broad, as long as or a little longer than its distance from the end 
of the snout and a little shorter than the parietals ; loreal as long as 
deep or a little deeper than long; one or two pre-and two post- 
oculars; temporals 1+2; eight upper labials, fourth and fifth 
entering the eye; five lower labials in contact with the anterior 
chin-shields, which are as long as or a little longer than the 
posterior. Scales in 17 rows. Ventrals 187-195; anal divided ; 
subeaudals 62-85. Length of tail 44 to 6 times in the total 
length. Pale brown or greyish above, with three more or less 
distinct dark brown longitudinal streaks on the back and two 
on the tail; lower parts whitish, uniform or dotted with brown. 
Total length 710 millim.; tail 120. 
Curacao, Venezuela, Surinam. 
a, 2 (V. 189; C. 84). Curacao. E. Hartert, Esq. [C.]. 
b,c. d (V.191, 192; C.?,85). Surinam (?). Van Lidth de Jeude 
Collection. 
d. 2 (V. 192; C. 62). Paraguay (?). 
VOL, Il. K 
