10 COLUBRID Z, 
B. Scales in 17 rows. 
1. Maxillary teeth 30 to 38. lf 
Remmandnly 84206 «--. s. ce eee nace - 4, rhombifer, p. 14, ” 
Subcaudals 109-128; loreal as deep aslong. 5. bivittatus, p. 15. V 
Subcaudals 113-155 ; loreal usually longer ~ 
OSES A a 6. dendrophis, p. 15. Vv 1s 
2. Maxillary teeth not more than 25. 
Frontal hardly once and a half as long as 
broad ; loreal not or but slightly longer 
than deep; ventrals 158-169 ........ 7. chloroticus, p. 16. — '* 
Frontal at least once and a half as long as 
broad ; loreal longer than deep ;, ventrals lips age 
ef yah onga tian ba dhaynictl- ons ls eee 8. margaritiferus, © \© 
1. Drymobius bifossatus. 
Coluber bifossatus, Raddi, Mem. Soc. Ital. Modena, xviii. (Fis.), 
1820, p. 333. 
—— capistratus, Lichtenst. Verz. Doubl. Mus. Berl. p. 104 (1828). 
lichtensteinii, Wied, N. Acta Ac. Leop.-Carol. xii. ii. 1825, 
p- 498, pl. xlvi., and Beitr, Nat. Bras. i. p. 305 (1825); Wagl. 
Icon. Amph. pl. iv. (1828) ; Wied, Abbild. (1831). 
pantherinus (non Daud.), Schleg. Phys. Serp. ii. p. 143, pl. v. 
figs. 15 & 14 (1837). 
Coryphodon pantherinus, Dum. § Bibr. vii. p. 181 (1854) ; Giinth. 
Cat. p. 107 (1858) ; Jan, Icon. Gén. 24, pl. iii. fig. 1 (1867).. 
Drymobius pantherinus, Cope, Proc. Am. Philos. Soc. xxii. 1885, 
, 192. 
Ptyas pantherinus, Boettg. Zeitschr. f. ges. Naturw. lviii. 1885, p. 233. 
Drymobius bifossatus, Bouleng. Ann. § Mag. N. H. (6) xiii. 1894, 
p. 346. 
Maxillary teeth 27 to 30, posterior feebly enlarged. Rostral 
nearly as deep as broad, visible from above; internasals much 
shorter than the preefrontals ; frontal] once and two thirds or once 
and three fourths as long as broad, as long as or longer than its 
distance from the rostral, a little shorter than the parietals; loreal 
as long as deep or deeper than long; one preocular, usually not 
touching the frontal; two postoculars; temporals 242; eight 
upper labials, fourth and fifth entering the eye; four or five lower 
labials in contact with the anterior chin-shields, which are shorter 
than the posterior. Scales smooth, in 15 rows. Ventrals 160-183; 
anal divided ; subcaudals 85-102. Above with three parallel series 
of large, roundish or subquadrate, blackish or dark brown black- 
edged spots, separated by narrow yellowish or yellowish-brown 
interspaces ; the spots of the lateral series extending to the sides of 
the belly; a pair of longitudinal dark bands or a U-shaped band on 
the back of the head and nape, and a dark ecross-band between the 
eyes ; labials yellowish, black-edged ; lower parts yellowish, with 
brown or black spots. 
Total length 1750 millim. ; tail 450. 
Brazil, Paraguay. 
