181. EETTHEOLAMPRUS. 207 



/. cJ (V. 131 ; C. 75). Tampico. Mr.H.H. Smith [C.] ; 



F. D.Godman, Esq. 



g. $ (V. 128 ; 0. ?). Hacienda del Hobo. P. Ged'des, Esq. [P.]. 



h. d (V. 128; C. ?). Tehuantepec. 



i. cJ (V. 123 ; C. 94). Vera Paz. 0. Salvin, Esq. [C.l. 



k. $ (V. 135 ; C. ?). Belize. O. Salvin, Esq. [C.]. 



l-n, 0. (S (V. 121 ; 0. Stann Creek, Brit. Hon- Rev. J. Eobertson 



86), $ (V. 180, duras. [0.]. 



130; C. ?, 78), & 



hgr. (V.129; C. 78). 

 p-r. cJ (V. 120; 0. 98) Brit. Honduras. 



& 2 (V. 182, 182 ; 



0. 81, 79). 

 s-t. d (V. 123, 123; ? (Two of the types of 



C. 89, 87). C.Jlssidens.) 



7. Erythrolamprus fissidens. 



Coronella fissidens, part., Giinth. Cat. p. 36 (1858). 



Coniophanes punctigularis. Cope, Proc. Ac. Philad. 1860, p. 248, and 



Journ. Ac. Philad. (2) viii. 1876, p. 138 ; F. MuU. Verh. Nat. Ges. 



Basel, vi. 1878, p. 666. 

 fissidens, Cope, II. cc. ; Boccmrt, Miss. Sc. Mex., Rept. p. 650, 



pi. xU. fig. 3 (1886). 

 Dromicus chitalonensis, F. 3£UU. Verh. Nat. Ges, Basel, vi. 1877, 



p. 407. 

 Tachymenis fissidens, part., Garm. N. Am. Rept. p. 62 (1883) ; 



Giinth. Biol. C.-Am., Bept. p. 161 (1895). 

 Erythrolamprus fissidens, Cope,i?Ma U.S. Nat. Mus. no. 32, 1887, p. 77. 

 violaceus, Cope, I. c. 



Snout moderate, rather strongly depressed, rounded. Rostral 

 once and a half to nearly twice as broad as deep, scarcely visible 

 from above ; internasals much shorter than the prefrontals ; 

 frontal once and a half to once and two thirds as long as broad, as 

 long as or longer than its distance from the end of the snout, shorter 

 than the parietals ; loreal nearly as long as deep ; one prseocular 

 (rarely divided); two postoculars ; temporals 1+2; eight upper 

 labials, fourth and fifth entering the eye ; four or five lower labials 

 in contact with the anterior chin-shields, which are as long as or a 

 little longer than the posterior. Scales in 21 rows. Ventrals 

 117-140; anal divided ; subcaudals 64-89. Brown above, with or 

 without longitudinal series of small dark spots, or an ill-defined 

 dark vertebral stripe ; a dark lateral streak ; a pair of more or less 

 distinct fine yellowish lines on the neck, broken up into small spots 

 anteriorly or preceded by a small roundish spot ; labials grey or 

 brown, speckled with black, with a yellow, above black-edged line 

 runifing along their upper border ; this line extends to the side of 

 the neck ; throat speckled with blackish ; lower parts white, with 

 more or less numerous black dots, which may form a regular series 

 on each side of the beUy. 



Total length 525 miUim. ; tail 145. 



Mexico and Central America. 



