10 OOtUBBID^. 



B. Scales in 17 rows. 



1. MaxiUary teeth 30 to 38. 



Subeaudals 84-96 4, rJiomlifer, p. 14. 



Subcaudals 109-128 ; loreal as deep as long. 5. hivittatus, p. 15. 

 Suboaudals 113-155 ; loreal usually longer 



than deep 6. dendrophis, p. 15. 



2. MaxiUary 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. chlorotieus, p. 16. 



Frontal at least once and a half as long as 



broad ; loreal longer than deep ; ventrals [p. 17. 



144-159 8. margdritiferus, 



1. Drymobius bifossatus. 



Coluber bifossatus, Raddi, Mem. 8oc. Ital. Modena, xviii. (Fis.), 



1S>W, p. 333. 



capistratus, Lichtenst. Verz. Doubl. Mus. Berl. p. 104 (1823). 



liohtensteinii, Wied, N. Acta Ac. Leop.-Carol. xii. ii. 1825, 



p. 493, pi. xlvi., and Beitr. Nat. Bras. i. p. 305 (1825) ; Wagl. 



Icon. Amph. pi. iv. (1828) ; Wied, Ahhild. (1831). 

 pantherinus [non Daud.'), Schleg. Phys. Serp. ii. p. 143, pi. v. 



figs. 13 & 14 (1837). 

 Coryphodon pantherinus, Bum. Sf Bihr. vii. p. 181 (1854) ; CHinth. 



Cat. p. 107 (1858); Jan, Icon. Gin. 24, pi. iii. fig. 1 (1867). 

 Drymobiua pautheruius, C(ype, Proc. Am. Philos. Sac. xxii. 1885, 



p. 192. 

 Ptyas pantherinus, Boettg. Zeitschr. f. get. Naturw. Iviii. 1885, p. 233. 

 Drymobius bifossatus, Bouleng. Ann. §■ Mag. N. H. (6) xiii. 1894, 



p. 346. 



Maxillary teeth 27 to 30, posterior feebly enlarged. Eostral 

 nearly as deep as broad, visible from above ; internasals much 

 shorter than the prsefrontals ; 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 prseocular, usually not 

 touching the frontal; two postoculars ; temporals 2+2; eight 

 upper labials, fourth and fl.fth 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 cross-band between the 

 eyes ; labials yellowish, black-edged ; lower parts yellowish, with 

 brown or black spots. 



Total length 1750 miUim. ; tail 450. 



Brazil, Paraguay. 



