longer than high. Olive brown above, a light line on second and 

 third row of scales (or second row. A. series of small black spots 

 forming a broken darker line, both above and below the lateral light 

 stripe. Throat yellowish. Gastrosteges jet black centrally, with 

 lateral black wings extending toward the sides. Sides of gastrosteges 

 olive or plumbeous ("or pale grayish with a median series of more or 

 less confluent small black spots" Blgr). The black ventral line is 

 narrow anteriorly, just behind the throat, where it begins. Uros- 

 teges jet black centrally, grayish laterally. 



34. Thamnophis stejnegeri sp. nov. 



Number 4032 from Salamanca, State of (iuanajuato, Mexico, taken 

 by Mr. A. J. Woolman, appears to be a new and distinct form. I have 

 been unable to find any description to which my specimen answers; 

 however, as the variation in this genus is so ereat it may prove to be 

 but a synonym of a already described form. 



JBescription of 4032 Stanford Univ. Zool Dept Mus Type 



of Thamno^fiis^tejnegeri. Type localityy : Salamanca, Estado de 

 Guanajuato, Mexico.) Lateral stripe on third and fourth rows. 

 Scales in twenty-one rows, first row keeled. Temporals 1-2, 1-3 (an 

 additional scute on one side). Tail abont one-fourth the total length. 

 Superior labials eight, eye above the suture between fourth and fifth. 

 Oculars 1-3. Inferior labials ten, first five in contact with the ante- 

 rior genials The posterior genials longer than the anterior. There 

 are four small scutes between the two posterior genials. Upper end 

 of preooulars touch the anterior lateral corners of the frontal. 



Dorsal stripe covers the middle (lltli) row and inner half of the 

 row (10th), bordering it on each side. It extends from the very base 

 of the junction of the parietal plate to the neighborhood of the anus, 

 and from this region on to the extremity of the tail; the stripe occu- 

 pies only the inner half of the two scale rows. Between the dorsal 

 and the lateral stripes the dorsal region is black, (possibly brown in 

 live specimens,) each scale has a white line along its keel — in this 

 respect resembling Drymohiv.s margaritijerus (Schlegel). These 

 whitish lines show plainly through the scutes. Below the lateral 

 lines, the first and second rows are olive grayish, with black spots on 

 the edges of the scales, which form a very irregular row or rows of 

 spots. The superior labials are black bordered and the inferior labi- 

 als slightly so,' A. light cresentic indentation extends upward back 

 of the angle of the mouth into the dorsal coloration. The head be- 

 neath is yellowish. Gastrosteges and urosteges olive-greenish, with 

 a narrow black line at the base of each, which in some may be con- 

 cealed by its imbricate neigiibor. 



Number 4034, taken by the same collector near the City of Mex- 

 ico, resembles the above specimen very much, but differs from it in 

 the following particulars: Oculars 1-3, 1-4. Preoculars not quite 

 touching anterior corners of the frontal. Smaller in size. Dorsal 

 coloration with indistinct indentations of a lighter shade laterally. 

 Temporals 1-3 on both sides. 



This seems apoarentl;-' so distinct from any de cription I have 

 encountered that I venture to describe it despite the small number 

 of existing examples. 



Compared with Prof. Cope's recent key" to the genus. Our new 

 species seems to be closely connected with T. proxima (Say) and T. 

 megalops (Ivennicott) and more nearly to the latter. Being unable to 

 compare my new form with this species I will have to hope that my 

 description can be relied upon to explain the distinctive coloration 

 and other features of this new form. 



As my specimens were both alcoholic, the colors above described 

 are not applicable to the living reptiles. 



* Prcc. U. S. Nat. Mus. XIV., 1892, p. 646. 



