416 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Chionactis episcopus isozonus Cope. 



Banded Miter Snake. 



Contia isozona Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 304. 



Contia episcopa torquaia Cope, Bull. U. S. Nat. Mus., No. 20, 1880, p. 21. 



Fig. 34. 

 Chionactis episcopus isozonus Cope. 



Two postoculars ; six rows of gular scales. Rostral rouuded, 

 slightly produced backwards. Scales in fifteen rows, all smooth. 

 Superior labials seven ; the orbit bounded by the third and more 

 largely by the fourth, Loreal small, quadrangular, longer than 

 high. Oculars 1-2, anterior short, covered above by supercili- 

 ary. Postoculars resting on fourth labial. Fifth and sixth 

 labials equal, as high as long. Parietals large, long. Frontal 

 longer than wide. 



Prefrontals transverse. Internasals partly separated by ros- 

 tral, which is not very prominent. Superior labials six, first 

 pair meeting ; fourth largest. Postgenials extremely short. 

 Temporals little larger than body scales, 1-2. Muzzle obtuse ; 

 head scarcely distinct ; eye small. Gastrosteges about 160. Uro- 

 steges about 40. 



About twenty black half-rings, separated by equal spaces of 

 pinkish ground color. About six black half-rings on the tail. 

 Below immaculate, yellow to reddish. 



