158 APPENDIX C. 



and on the 2d and 3d rows, is a still smaller and quite 'indistinct 

 third series, and occasionally traces of a fourth on the 1st and 2d. 

 The ground-color or space between the blotches is grayish ash ; each 

 scale minutely mottled with dark-brown or black; the extreme bor- 

 der generally pure ash, especially on the sides. Beneath yellowish 

 white, with rather indistinct blotches of brownish ash, thickest 

 behind. 



Head grayish ash, with a somewhat curved broad brown vitta on 

 the back part of the postfrontals, which, involving the commissure 

 of the anteorbital and superciliary, passes back through the eye, and 

 crossing the angle of the mouth on the adjacent halves of the ulti- 

 mate and penultimate labials, extends into the blotches on the sides 

 of the neck. A second nearly effaced bar crosses the anterior front- 

 als, leaving an ash-colored band half the width of the first-mentioned 

 bar. The anterior dorsal blotch is replaced by two elongated ones 

 running up on the head to the centre of the occipitals, parallel with 

 the postocular vitta, with an ash-colored stripe between the two, 

 which extends from the superciliary backwards on the sides of the 

 neck. As in the other brown marks, these stripes are margined by 

 black. The adjacent edges of the 4th and 5th labials are brown. This 

 is the only species except >S^. guttatus, 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 S. vnlpinus in the gray color, much larger 

 eye, longer head, narrower vertical, &c. ; from >S'. Icctus in much the 

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

 tudinal ; from S. Ltndhewieri in lighter color, and absence of white 

 margins to the basal ends of the dorsal scales. 

 Howard Sjprmgs, Tex. 217+1. 72. 29. 41i 7. J. H. Clark. 



8. Georgia obSOlefa, B. & G. — Postorbitals resting on the fifth 

 labials, not on the 4th, as in Georgia Coiqieri. Black above, beneath slate- 

 color ; anteriorly with the bases of the scutellaj red. 



Syn. Coluber obsoleius, Say in Long's Exped. Rocky Mts., I, 1823, 140. — 

 Harl. Journ. Acad. Nat. So. Philad. V, 1827, 347; and Med. & Phys. Res. 

 1835, 112.— HoLBR. N. Amer. Herp. Ill, 1842, 61. PI. xii. 



Upper labials 8 ; 7th and 8th largest; postorbitals supported by 

 the 5th; 6th labial small, triangular, but still separating the 5th and 



