OPHIDIA-ELAPIDAE— ELAPS EURYXANTHUS. 611 



PROTERGGLYPHA. 



ELAPIDAE. 



48. Elaps euryxanthus, Eenn. — Harlequin Snake. 



Maps euryxanthus, Kenn., Proe. Acad. Nat. Sci. Pbila., 1860, 337.— Cope, Proc. Acad. 

 Nat. Sci. Phila., I860, 307.— Id., Check-List, 1875, 34. 



Head very small, narrower than the neck; entirely black as far 

 back as the angles of the mouth. Body banded alternately with black and 

 light brick red, separated by narrow rings of creamy white ; all the bands 

 immaculate ; first broad ring belhnd the occiput red instead of black, as in 



the other species The plates of the head and the peculiar style of 



coloration in this strongly marked species cannot be mistaken. The three 

 colors, each immaculate, glossy, and clear, form a striking contrast, and the 

 red is probably bright carmine in life, thus affording the most beautiful 

 coloration possessed by any North American snake. — (JDescr. orig.) 



A rather large, slender, and very beautiful species, known in Arizona 

 as the "King" and " Ring" snake. It is apparently not abundant. One 

 of my two specimens was taken at Fort Whipple, the other on Date Creek. 

 Excepting the rattlesnakes, this is the only venomous reptile I observed in 

 the Territory. 



ASINEA. 



COLUBRIDAE. 



49. Heterodon simus nasicus, (Bd. & Gir.). 



b. NASICUS. 



Heterodon nasicus, Bd. & GiR., Stans. Eep. Exp. Great Salt Lake, 1802, 352. — lid. 

 Marcy's Eep. Red Riv., 1852, 208.— lid., Cat. N. A. Rept., 1853, 61, 157.— 

 Hallow., Sitgreave's Exp. Zuiii & Col. Riv., 1853, 147.— Bd., P. R. R. 

 Rep., x, 1859, Whipple's Route, Reptiles, 41. — Hallow., Proc. Acad. Nat. 

 Sci. Pbila., 1856, 249.— Bd., P. R. R, Rep., x, 1859, Beckwith's Route, 

 Reptiles, 19.— Id, U. S. & Mex. Bound. Surv., ii, pt, ii, 1859, 18, pi. 11, f. 1.— 

 Hayd., Trans. Am. Phil. Soc, xii, 1802, 177. — Cope, Proc. Acad. Nat. Sci. 

 Phila,, 1866, 307.— Allen, Proc. Bost, Soc. Nat. Hist,, xvii, 1874, 69 (Yel- 

 lowstone). 



Heterodon simus, subsp. nasicus, Cope, Check- List, 1875, 43. 



