308 COLUBRID &. 
Rhegnops zebrinus, Cope, Proc. Amer. Philos. Soc. xxii. 1885, p. 178. 
Geophis zebrina, Giinth, Biol. C.--Am., Rept. p. 94 (1893). 
Snout rounded. Rostral small, nearly as deep as broad; inter- 
nasals very small, broader than long; prefrontals 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 ; 
loreal twice as long as deep; two postoculars; temporals 1+2; 
seven upper labials, third and fourth entering the eye ; four lower 
labials in contact with the single pair of chin-shields, which are~ 
moderately large and separated from the symphysial. Scales in 17 
rows. Ventrals 160; anal entire; subeaudals 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, Bote, Isis, 1827, p. 540. 
——- flammigerus, Bore, /. c. 
Calamaria badia, part., Schley. 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. 1. 1862, p. 13, and 
Icon. Gén. 10, pl. iv. fig. 3 (1865). 
badium, var. multicinctum, Jan, ll. ce. p. 14, pl. iv. fig. 6. 
? Rabdosoma badium, var. rubinianum, Jan, ll. ce. fig. 4. 
? Rabdosoma dubium, Jan, ll. cc. p. 18, Icon. 11, pl. iii. fig. 4. 
Rhabdosoma microrhynchum, Cope, Proc. Ac. Philad. 1868, p. 102. 
Rabdosoma maculatum, part., Bocourt, Miss. Sc. Mex., Rept. p. 539, 
pl. xxxiv. fig. 2 (1885). 
Geophis badius, Boettg. 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+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. Scalesin 17rows. 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. 9 (V. 155; C. 38). Surinam. 
2 (V. 150, 153; Surinam. Hr. Kappler [C.}. 
