184. HOMALOCBANIUM. 219 



H. wagneri, Jan, from Florida, which is referredjto the synonymy 

 of H. coronatum by Cope, differs in having the symphysial in contact 

 with the anterior chin-shields, and an undivided anal shield. 

 Loennberg also notes a specimen from Florida in which the first 

 pair of lower labials do not come in contact on the median line, 

 although very close together. 



6. Homalocranium rubrum. 



Tantilla rubra, Cope, Joum. Ac. Philad. (2) viii. 1876, p. 144. 

 Homalocranium rubrum, Hocourt, Miss.' Sc. Mex., jRept. p. 590, 



pi. xxxvii. fig. 6 (1883) : Gunth. Biol. C.-Am., Rent. p. 155 



(1895). 



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

 deep, visible from above ; internasals about half as long as the 

 prsef rentals ; frontal hexagonal, obtuse-angled in front, acute-angled 

 behind, once and one third to once and a half as long as broad, 

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

 the parietals ; nostril between two nasals, the posterior of which is 

 in contact with or more or less narrowly separated from the prae- 

 ooular ; two postoculars ; temporals 1 -|- 1 ; seven upper labials, 

 third and fourth entering the eye ; first lower labial in contact with 

 its fellow behind the symphysial ; four lower labials in contact 

 with the anterior chin-shields, which are longer than the posterior. 

 Scales in 15 rows. Ventrals 149-179 ; anal divided ; subcaudals 

 59-70. Uniform red above ; back of head and nape black, with a 

 yellow bar across the occiput ; snout and upper lip behind the eye 

 yellow ; lower parts yellowish white. 



Total length 390 millim. ; tail 90. 



Mexico. 



a. 6 (V. 179; C. 70). Orizaba. 



*. Yg. (V. 154 ; 0. 59). Tapana, Tehuantepec. M. Sumichrast [C] ; 



F. D. Godman and 

 O. Salvin, Esqrs. 

 [P.]. 



e-d. $ (V. 155, 163 ; S. Mexico. F. D. Godman, 'Esq. 



C.?,65). [P.]- 



7. Homalocranium semicinctum. 



Homalocranium semicinctum, Bum. ^ Bihr. vii. p. 862 (1854) ; Jan, 

 Arch. Zool. Anat. Phys. ii. 1862, p. 63, and Icon. G4n. 15, pi. ii. 

 fig. 6 (1866). 



latioeps, Oiinth. Proe. Zool. Soc. 1860, p. 240. 



supracinctum, Peters, Mon. Berl. Ac. 1863, p. 272. 



Tantilla laticeps, Cope, Proc. Ac. Philad. 1866, p. 74. 



semicincta. Cope, I. c. 



Homalocranium lineatum, Fischer, Oster-Pi-ogr. Ahad. Oymn. Hamb, 

 1883, p. 6, pi. — . figs. 6-8. 



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



