308 COLUBRID.*:. 



Rhegnops zcbrinus, C<me, Proc. Amer. Philo*. Soc. xxii. 1885, p. 17H. 

 Geophis zebrina, Oilnth. Biol. C.-Atn., Kept. p. 94 (1803). 



Snout rounded. Rostral small, nearly as deep as broad; intrr- 

 nasals very hmall, broader than long ; prafroutals a little longer 

 than broad ; frontal a little longer than broad, as long as its 

 distance from the end of the snout, much shorter than the parietals ; 

 lorcal twice as long as deep ; two postoculars ; temporals 1 4- 2 ; 

 seven upper labials, third nnd fourth entering the eye ; four lower 

 labials in contact with the single pair of chin-shields, which ore 

 moderately large and separated from the symphysial. Scales in 17 

 rows. Ventrals 1 00 ; anal entire ; subcaudals 34. Pinkish yellow 

 above, with about forty irregular transverse brown spots ; lower 

 parts dotted all over with reddish brown. 



Total length 155 millim. ; tail 18. 



Tehuantepec. 



13. Atractus badius. 



Brachyorrhos badius, Boie, Isis, 1827, p. 540. 



flammigerus, Boie, I. c. 



Calamaria badia, part., Schleg. Phys. Serp. ii. p. 35 (1837). 

 Rabdosoma badium, Dum. $/ Bibr. vii. p. 95 (1854); Giinth. Cat. 



p. 11 (1858). 

 badium, part., Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 13, and 



Icon. Gin. 10, pi. iv. fig. 3 (1*65). 



badium, var. multicinctum, Jan, II. cc. p. 14, pi. iv. fig. 5. 



? Rabdosoma badium, var. rubinianum, Jan, II. cc. fig. 4. 

 ? Rabdosoma dubium, Jan, II. cc. p. 18, Icon. 11, pi. iii. fig. 4. 

 Rhabdosoma Tnicrorhynchum, Cope, Proc. Ac. Philad. 1868, p. 102. 

 Rabdosoma maculatum, part., Bocourt, Miss. Sc. Mex., Rept. p. 539, 



pi. xxxiv. tig. 2 (1883). 

 Geophis badius, Boetty. Ber. Senckenb. Ges. 1888, p. 192. 



Snout obtuse. Rostral small, a little broader than deep, just 

 visible from above ; internasals very small ; frontal as long as 

 broad or a little broader than long, as long as or shorter than its 

 distance from the end of the snout, much shorter than the parietals : 

 loreal twice and a half to thrice and a half as long as deep ; two 

 postoculars ; temporals 1 -f 2 ; seven (exceptionally eight) upper 

 labials, third and fourth (or fourth and fifth) entering the eye ; 

 three or four lower labials in contact with the single pair of chin- 

 shields, which are rather elongate, moderately broad, and separated 

 from the symphysial. Scales in 17 rows. Ventrals 143-160 ; anal 

 entire ; subcaudals 20-47. Coloration very variable. 



Total length 430 millim. ; tail 60. 



Guianas, Northern Brazil, Peru, Ecuador. 



A. Dark brown above ; anterior part of body paler brown or 

 reddish, with pairs of black annuli ; belly uniform whitish or 

 with a median series of black spots. 



a. ^ (V. 155 ; C. 38). Surinam. 



b-c. 9 (V. 150, 153 ; Surinam. Ilr. Kappler [C.]. 



C. 38, 38). 



