250 COLUBRID^E. 



elongate ; scales smooth, with apical pits, in 15 or 17 rows ; ventrala 

 rounded. Tail long, ending obtusely ; subcaudals in two rows. 

 Tropical America. 



Sijnopsis of the Species. 



Scales 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; 



prsefrontal entering the eye 1. toi-quatus, 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 prseocular .... 2. sumichrasti, p. 250. 

 Scales 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 ; prsefrontal • 



entering the eye 3. sdateri, p. 251. 



1. Leptocalamus torquatus. 



Leptocalamus torquatus, Gilnth. Ann. i^~ Mag. N. H. (4) ix. 1872, 



p. 17, pi. iii. fig. A. 

 Geophis unicolor, Fischer, Ahh. natunu. Ver. Bremen, vii. 1880, 



p. 227, pi. XV. figs. 1-3. 

 Enulius murinus (non Cope), Bocourt, Miss. Se. Mex., Rept. p. .537, 



pi. XXXV. fig. 9 (1883). 

 Leptocalamus unicolor, Cope, Proc. A^ner. Philos. Soc. xxii. 1885, 



p. 178 ; Giinffi. Biol. C.-Am., Rept. p. 100 (1893). 

 Geagras longicaudatus, Cojje, 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 prasfrontals, which largely enter the eyes ; frontal large, as 

 long as broad, as long as its distauce from the end of the snout, a 

 little shorter than the parietals ; supraocular very small ; loreal as 

 long as the nasals ; no praeocular ; 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 yeUow band across the occiput ; lower parts uniform 

 yellowish. 



Total length 305 millim. 



Mexico. 



a. c? (V. 183; C. ?). S. America (?). (Type.) 



2. Leptocalamus sumichrasti. 



Enulius sumichrasti, Bocourt, Miss. Sc. Mex., Rept. p. 538, pi. xxxi. 



fig. 6 (1883). 

 Geagras sumichrasti, Cope, Am. Nat. 1884, p. I(i2. 



