183. SCOIEOOPHIS. 211 



/Synopsis of the Species. 



iSoales smooth; nostril between two 



nasals; ventrals 181-198 1. atroeinctus, p. 211. 



:Seales smooth ; nasal single ; ventrals 



152-170 2. micTioacanensis, p. 211. 



Posterior dorsal and caudal scales 



keeled ; nostril between two nasals ; 



ventrals 148 3. cemulus, p. 212. 



1. ScolecopMs atroclncttis. 



Calamaria atrocincta, Schleg. Phys. Serp. ii. p. 47 (1837). 

 Homalocranium atrocinctum, Dum. ^ Bibr. vii. p. 864 (1854) ; Jan, 



Icon. G&n. 15, pi. ii. %. 7 (1866). 

 Elaps zonatus, HaUow. Proc. Ac. Philad. 1855, p. 35. 

 Scolecopliis atroeinctus, Cope, Proc. Ac. Philad. 1860, p. 269 ; 



Bocourt, Miss. Sc. Mex., Sept. p. 577, pi. xxxvii. fig. 2 (1883) ; 



Giinth. Biol. C.-Am., Rept. p. 156 (1896). 

 zonatus, Cope, I. c. 



Eye not quite half as long as the snout. Eostral broader than 

 •deep, just visible from above ; iiiternasals not more than half as 

 long as the praefrontals ; frontal longer than broad, as long as or 

 longer than its distance from the end of the snout, much shorter 

 than the parietals ; nostril between two nasals ; loreal as long as 

 deep or a little longer than deep ; one prae- and two postooulars ; 

 "temporals 1 + 1 ; seven upper labials, third and fourth entering the 

 eye ; four lower labials in contact with the anterior chin-shields, 

 which are longer than the posterior. Scales in 15 rows. Ventrals 

 angulate laterally, 181-198 ; anal divided ; subcaudals 45-54. 

 Annulate black and yeUow, the black annuli broader than the 

 jeUow ones; head black above, with a yellow cross-bar on the 

 snout, and a yellow spot behind the eye. 



Total length 370 miUim. ; tail 47. 



Guatemala. 



«-e. t? (V. 181 ; 0. 47) Duefias, Guatemala. O. Salvin, Esq. [0.1 



& $ (V. 198, 188; 



C. 45, 60). 

 d. Tg. (V. 193 ; C. 47). ? Dr. GUnther [P.]. 



2. ScolecopMs michoacanensis. 



Contia michoacanensis. Cope, Proc. Amer. Philos. Soe. xxii. 1885, 



p. 178. 

 Homalocranium michoacanense, Giinth. Biol. C.-Am., Bept. p. 150, 



pi. izxvi. figs. B & C (1895). 

 Elapomorphus michoacanensis, Cope, Trans. Amer. Philos. Soc. xviii. 



1895, p. 218. 



Eye nearly half as long as the snout. Eostral broader than deep, 

 visible from above ; internasals more than half as long as the 



p2 



