J^54 REPORT OF NATIONAL MUSEUM, 1898. 



marks, these stripes are margined with black. The adjacent edges of 

 the fourth and fifth labials are brown. This is the only species, except 

 C. guttattis, in which the postocular vitta crosses the angle of the 

 mouth and passes down the side of the neck. There is scarcely any 

 indication of elongation in the lateral spots except anteriorly. 



This species differs from G. vuljpinus in the gray color, much larger 

 eye, longer head, narrower vertical, etc.; from C. Iwtus in much the 

 same points, as well as in having the dorsal spots transverse, not lon- 

 gitudinal ; from C. obsoletus in lighter color and absence of white margins 

 to the basal ends of the dorsal scales, and from all in the smooth dorsal 

 scales. 



Cat. Nos. Gastrosteges. Urosteges. Scales. Lengtli. Tail. 



mm. inm. 



1707 : 219 + 1. 72. 27. 



1716 222 + 1. 68. 29. 795. 162. 



2263 217 + 1. 78. 29. 



4766 219 + 1. 65. 



4965 236 + 1. 63. 27. 



14223 222 + 1. 73. 



13333 - 236 + 1. 7B. 29. 



This is a southwestern species of the Eastern region, not having 

 been yet found east of the Mississippi Eiver nor north of Kansas. Its 

 range extends at least as far south on the Mexican Plateau as the city 

 of Chihuahua, where it has been found abundantly by Mr. Edward 

 Wilkinson. 



Coluber emoryi Baird and Girard. 



Catalogue 

 No. 



47G6 

 1707 

 1694 

 1712 

 4065 

 1716 

 2263 

 5506 

 2259 

 14223 

 17073 

 22138 

 15501 

 15673 



Number 

 of speci- 

 mens. 



Locality. 



Howard Sprinpc, Texas 



Fort Riley, Kansas 



Arkansas 



Brazos River, Texas 



Fort McKavett, Texas 



Pecos River, Texas 



do 



Sauta. Caterina, Mexico 



Fort Bliss, New Mexico 



Kansas 



City of Chihuahua, Mexico. 

 Cameron County, Texas . . . 



Las Cruces, New Mexico 



Lower Rio Grande (?) 



San Diego, Texas 



From whom received. 



J. H. Clark 



Dr. B. F. Shumard 



Dr. H. -J. Anderson 



Capt. John Pope, U. S. A. . . 

 Maj. W. H. Emory, U. S. A . 

 Jjieutenant Couch, U. S. A . 

 Dr. S. W. Crawford, U. S. A 



R. Kennicott 



E. Wilkinson 



C.K. Worthen 



J.M.Walker 



William Taylor. 



Nature of specimen. 



Alcoholic type 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



COLUBER BAIRDII Yarrow. 



Coluber bairdii Yarrow, Bull. U. S. Nat. Mus., No. 17; 1880, p. 41.— Cope, Proc. 



U. S. Nat. Mus., XIV, 1891, p. 631. 

 Coluber giitialus Boulenger, part. Cat. Snakes Brit. Mus., II, 1894, p. 40. 



Body rather compressed. Head very broad ; neck contracted. Frontal 

 plate longer than broad ; i)arietals moderate, longer than muzzle ante- 

 rior to frontal. Two temporals of the first row; superciliaries broadest 

 posteriorly; anterior orbital one; postorbitals two, lower largest; nine 

 upper labials, seventh largest ; lower border of orbit formed by upper 



