206 COLTJBRIDiE. 



6. Erythrolamprus imperialis. 



Coronella flssidens, part., GilntJi. Cat. p. 36 (1858), and Zool. Hec, 



1866, p. 126. 

 Tseniophis imperialis, Baird Sf Gir. Rep. U.S. Mex. Bound. Surv. 



ii. Rept. p. 23, pi. xix. fig. 1 (1869) ; Cope, Froc. Ac. Philad. 1861, 



p. 74. 

 Coniophanes proterops, Cope, Proc. Ac. Philad. 1860, p. 249 ; Bocourt, 



Miss. So. Mex., Bept. p. 654 (1886). 

 Glaphyrophis lateralis, Jan, Arch. Zool. Anat. Phys. ii. p. 304, and 



Icon, Gen. 18, pi. v. fig. 3 (1866). 

 Tachymenis fissidens, part., Peters, Mon. Berl. Ac. 1869, p. 876 ; 



Garm. N. Am. Bept. p. 62 (1883) ; Giinth. Biol. C.-Am., Bept. 



p. 161 (1896). 

 Coniophanes imperialis. Cope, Chech-list N. Am. Bept. p. 88 (1876), 



and Journ. Ac. Philad. (2) viii. 1876, p. 183 ; Stejneger, Proc. 



U.S. Nat. Mus. xiv. 1891, p. 505. 



lateralis, F. Miill. Verh. Nat. Ges. Basel, vi. 1878, p. 598. 



Tachymenis imperialis, Garm. N. Am. Bept. p. 61 (1883). 

 Ehadinaea proterops. Cope, Proc. Amer, Philos. Soc. xxii. 1885, 



p. 381. i 



■ imperialis. Cope, I. c. p. 382. 



Erythrolamprus imperialis. Cope, Bull. U.S. Nat. Mus. no. 32, 1887, 



p. 77. 

 proterops. Cope, I. c. 



Head as in E. fissidens, but smaller. Eostral once and a half to 

 once and two thirds as broad as deep, just visible from above ; 

 intemasals not more than half as long as the praefrontals ; frontal 

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

 or a little longer than its distance from the end of the snout, shorter 

 than the parietals; loreal as long as deep or a little longer than 

 deep ; one praeooular ; two postoculars ; temporals 1 + 2 ; eight 

 (exceptionally seven) upper labials, fourth and fifth (or third and 

 fourth) entering the eye ; five lower labials in contact with the 

 anterior chin-shields, which are as long as or a little shorter than 

 the posterior. Scales in 19 rows. Ventrals 120-143; anal 

 divided; subcaudals 67-94. Brown above, sides, down to the ends 

 of the ventrals, darker ; a blackish vertebral line or stripe often 

 present ; a blackish lateral streak edged above with yellowish on 

 the anterior part of the body, and preceded by a yellow round or oval 

 spot on the nape ; a light line may be present along the outer row 

 of scales ; a yellow, black-edged line on each side of the head, from 

 the canthus rostralis to the temple ; upper lip white, dotted with 

 black and edged with black above ; lower parts white, uniform, or 

 with black dots, which are most numerous on the throat and neck. 



Total length 405 millim. ; tail 160. 



Texas, Mexico, Central America. 



a. 2 (V. 126; C. ?). Mexico. M. SaU« [0.]. 



h. $ (V. 123 ; C. 78). Mexico. 



c, d-e. Yg. (V. 126, Jalapa. Mr. Hoege [0.1. 



135, 131 ; 0. 69, 73, 



75). 



