241. BLAPS. 415 



Lalf as long as broad ; one prse- and two postooulars ; temporals 

 1 or 1+1; six upper labials, second and third entering the eye; 

 first lower labial formed by the fusion of two. Scales in 15 rows. 

 Yentrals 209 ; anal entire ; subcaudals 29. Coloration as in 

 E. marcgravii. 



Total length 553 millim. ; tail 43. 



Brazil. 



3. Elaps euryxantlius. 



Elaps fulvius, part., Giinth. Ann. 8f Mag. N. H. (3) iv. 1859, 



p. 170. 

 euryxanthus, Kennicott, Proc. Ac. Philad. 1860, p. 337 ; Cope, 



Proc. Ac. Philad. 1861, p. 296 ; Cragin, Bull. Washburn Laborat. 



i. 1884, p. 8 ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 681 ; 



Stejneffer, Rep. U.S. Nat. Mus. f. 1893, p. 362, pi. ii. (1895). 



Eye much shorter than its distance from the mouth. Rostral 

 large, nearly as deep as broad, its upper portion nearly as long as 

 its distance from the frontal ; internasals nearly as long as the 

 praefrontals ; frontal small and narrow ; parietals small ; one prse- 

 and two postooulars; temporals 1+2; seven upper labials, third 

 and fourth entering the eye, seventh very small ; chin-shields very 

 short, the anterior in contact with three lower labials. Scales iu 

 15 rows. Yentrals 215-241 ; anal divided ; subcaudals 21-29. 

 Body with 11 or more black annuli edged with yellow and sepa- 

 rated by broad red interspaces ; head black to the posterior border 

 of the parietals. 



Total length 400 millim. ; taU 33. 



Arizona, Sonora, and North-western Mexico, 



«.§ (V. 220; 0.29). P Haslar Collection. 



4. Elaps graveiLhorstii. 



Elaps gravenhorstii, Jan, Rev. %■ Mag. Zool. 1858, p. 623, and Prodr. 

 pf. A (1859). 



Eye a little shorter than its distance from the mouth. Prontal 

 longer than broad ; parietals as long as their distance from the 

 internasals ; one prae- and two postooulars ; temporals 1 + 1 ; pos- 

 terior nasal separated from the prseocular, which is very small ; 

 seven upper labials, third in contact with the praefrontal, fourth and 

 fifth entering the eye. Scales in 15 rows. Yentrals 191 ; anal 

 divided; subcaudals 23. Body with black annuli disposed in 

 threes, the median broadest ; seven sets of annuli ; head black, 

 with a yeUow transverse band behind the eyes covering the anterior 

 two-thirds of the parietals and the posterior extremity of the 

 frontal. 



Total length 550 millim. ; tail 50. 



Brazil. 



