250 COLUBRIDJS. 



elongate ; scales smooth, with apical pita, in 15 or 17 rows ; ventrals 

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

 Tropical America. 



Synopsis of the Species. 



Scales in 17 rows ; portion of rostral visible 



from above one half or three fifths its dis- 

 tance from the frontal 'rental as long as 



its distance from the end of the snout; 



prsefrontal 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 prseocular .... 2. sumichrasti, p. 250. 

 Scales in 1 5 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. sclateri, p. 251. 



1. Leptocalamus torquatus. 



Leptocalamus torquatus, Giinth. Ann. Sf Mag. N. H. (4) ix. 1872, 



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

 Geophis unicolor, Fischer, 4bh. naturw. Ver. Bremen, vii. 1880, 



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

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



pi. xxxv. fig. 9 (1883). 

 Leptocalamus unicolor, Cope, Proc. Amer. Philos. Soc. xxii. 1885, 



p. 178 ; Giinth. Biol. C.-Am., Kept. 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 praef rentals, 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 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 yellow band across the occiput ; lower parts uniform 

 yellowish. 



Total length 305 millim. 



Mexico. 



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



2. Leptocalamus sumichrasti. 



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



fig. 6 (1883). 

 Geagras eumichrasti, Cope, Am. Wat. 1884, p. 102. 





