75. LioPHis. 129 



1. LiopMs pygmseus. 

 Liophis pygmseus, Cope, Pi-oo. Ac. Philad. 1868, p. 103. 



Head slightly distinct from neck, ovate, narrowed in front ; snout 

 slightly prominent. Rostral 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 prse- 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 ocoipito-nuohal 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 miUim. ; tail 30. 



Napo or Upper Maranon. 



2. JiiopMs triscalis. 4.'t*^ -M/ }> i ^ ^' 



Seba, ii. pi. xxxviii. fig. 3 (1735). 



Coluber triscalia, Linn. S. N. i. p. 385 (1766) ; Daud. Sept. vi. p. 377 



(1803). 

 Dromicus triscalis, Dum. 8f Bibr. vii. p. 672 (1854) ; GUnth. Cat. 



p. 131 (1858). 

 Liophis triscalis, Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 299, and 



Icon. Qen. 18, pi. iv. fig. 1 (1866). 

 ? Liophis rufus, Jan, I. c. p. 30l. 



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 praefrontals ; 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 prse- 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 ; 

 subcaudals 62-85. Length of tail 4| 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. 



Curasao, Yenezuela, Surinam. 



a 9 (V 189: 0.84). Curagao. E. Hartert, Esq. [C.]. 



b cS (V. 191, 192 ; 0. ?, 85). Surinam (.?). Van Lidth de Jeude 

 ' ■ Collection. 



d. 5 (V. 192 ; 0. 62). Paraguay (P). 



VOL. II. ^ 



