112. aTRacrvs. oll 
Snout obtuse. Rostral small, as deep as broad, just visible from 
above; internasals small; preefrontals as long as broad; frontal as 
long as broad, as long as its distance from the end of the snout, 
shorter than the parietals; loreal nearly three times as long as 
deep; two postoculars, lower very small and not in contact with 
the temporal; temporals 1+2; eight upper labials, fourth and 
fifth entering the eye; 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 15 rows. Ventrals 
150; anal entire; subcaudals 22. Black above and beneath; 
parietal shields, temporal and gular regions white. 
Total length 205 millim.; tail 24. 
Western Andes of Ecuador. 
18. Atractus reticulatus. (Priare XV. fig. 3.) 
Geophis reticulatus, Bouwleng. Ann. § Mag. N. H. (5) xvi. 1885, 
p. 87. 
Snout rounded. Rostral a little broader than deep, just visible 
from above; internasals very small; preefrontals as long as broad ; 
frontal a little broader than long, as long as its distance from 
the end of the snout, 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 15 rows. 
Ventrals 156; anal entire; subcaudals 26. Pale brownish above, 
each scale edged with dark brown; an ill-defined dark brown 
collar; lower parts uniform whitish. 
Total length 315 millim.; tail 40. 
Southern Brazil. 
a. 2 (V. 156, C. 26). 8, Lorenzo, Riv Grande Dr. H. von Ihering [C.]. 
do Sul. (Type.) 
19. Atractus emmeli. 
Geophis emmeli, Boetty. Ber. Senckenb. Ges. 1888, p. 192, fig. 
Snout rounded. MRostral somewhat broader than deep, just 
visible from above; internasals very small; prefrontals as long as 
broad ; frontal nearly once and a half as broad as long, a little 
shorter than the prefrontals, much shorter than the parietals ; 
loreal more than 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 rather elongate, moderately broad, and separated from the 
symphysial. Scales in 15 rows. Ventrals 167-170; anal entire ; 
subcaudals 28-30. Dark brown or olive-grey above, somewhat 
paler across the back of the head; yellowish, greenish, or greyish 
