10 COLTTBEID^. 



B. Scales in 17 rows. 



1. Maxillary teeth 30 to 38. 



Subcaudals 8-1^96 4. rJiombifer, p. 14. 



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

 Subcaudals 113-155 ; loreal usually longer 



than deep 6. dendropMs, p. 15. 



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 [p. 17. 



144-159 8. margaritiferus, 



1. Drymobius bifossatus. 



Cokiber bifossatus, Raddi, Mem. Soc. Ital. Modena, xviii. (Fis.), 



1820, p. 333. 



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



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



p. 493, pi. xlvi., and Beitr. Nat. Bras. i. p. 30.5 (1825) ; Wagl. 



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

 pantherinus (7ion Daiid.), Schleg. Phys. Serp. ii. p. 143, pi. v. 



figs. 13 & 14 (1837). 

 Coryphodon pantherinus, Dum. ^ Bihr. vii. p. 181 (18.54) ; Gilnth. 



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

 Drymobius pantherinus, Cope, Proc. Am. Philos. Soc. xxii. 1885, 



p. 192. 

 Ptyas pantherinus, Boettg. Zeitsckr.f.ges. Naturw. Iviii. 1885, p. 233. 

 Drymobius bifossatus, Boideng. Ann. 8^ 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 prasfrontals ; 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, foiirth and iifth 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 millim. ; tail 450. 



Brazil, Paraguay. 



