250 COLUBRID.&. 
elongate ; scales smooth, with apical pits, in 15 or 17 rows; ventrals 
rounded. ‘Tail long, ending obtusely ; subcaudals in two rows. 
Tropical America. 
Synopsis of the Species. 
Seales in 17 rows; portion of rostral visible 
from above one half or three fifths its dis- 
tance from the frontal ‘rontal as long as 
its distance from the end of the snout; 
prefrontal entering the eye............ 1. torquatus, p. 250. 
Scales in 17 rows; upper portion of rostral 
as long as its distance from the frontal; 
frontal longer than its distance from the 
end of the snout; a small preocular .... 2. sumichrasti, p. 250. 
Seales in 15 rows; upper portion of rostral 
about one third its distance from the 
frontal; frontal longer than its distance 
from the end of the snout; prefrontal 
Enters Che CYS... iw 2sin se semen 3. sclateri, p. 251. 
1. Leptocalamus torquatus. 
Leptocalamus torquatus, Giinth. Ann. § Mag. N. H. (4) ix. 1872, 
p. 17, pl. iii. fig. A. 
Geophis unicolor, Fischer, Mea, naturw. Ver. Bremen, vii. 1880, 
p- 227, pl. xv. figs. 1-3. 
Enulius murinus (non Cope), Bocourt, Miss. Se. Mex., Rept. p. 537, 
pl. xxxv. fig. 9 (1883). 
Leptocalamus unicolor, Cope, Proc. Amer. Philos. Soc, xxii. 1885, 
p- 178; Giinth. Biol. C.-Am., Rept. p. 100 (1893). 
Geagras longicaudatus, Cope, Am. Nat. 1884, p. 162. 
Rostral large, broad, the portion visible from above one half or 
three fifths its distance from the frontal; internasals shorter than 
_ the prefrontals, which largely enter the eyes; frontal large, as 
long as broad, as long as its distance from the end of the snout, a 
little shorter than the parietals ; supraocular very small; loreal as 
long as the nasals ; no preocular ; two postoculars ; temporals 1+ 2; 
seven upper labials, third and fourth entering the eye; a single pair 
of small chin-shields. Scales in 17 rows. Ventrals 177-203; anal 
divided ; subcaudals 90-102. Pale reddish brown above, uniform 
or with a yellow band across the occiput; lower parts uniform 
yellowish. 
Total length 305 millim. 
Mexico. 
@. 6 (V. 1885 C.:?). S. America (?). (Type.) 
2. Leptocalamus sumichrasti. 
Enulius sumichrasti, Bocourt, Miss. Sc. Mex., Rept. p. 538, pl. xxxi. 
fig. 6 (1883). 
Geagras sumichrasti, Cope, Am. Nat. 1834, p. 162. 
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