ON TEXAN REPTILES. 109 



obtaining in the eastern form the Texan has a brownish 

 color in which the dorsal blotches are persistent. The 

 spots vary from light brown to dark, but are in no case 

 black, and the ventral surfaces are more yellow than brown. 

 The white-edged scales of the back are present in all, and 

 the blotches of the larger ones show no indication of be- 

 coming obsolete. On the flanks there is a reddish tint. 

 There are 29 to 33 dorsal bh)tches, to the base of the tail. 

 The tail is more uniform in color, and darker on the 

 larger specimens. 



Kows 27, labials 8, infralabials 13, in one case 12, 1 

 anteorbital, postorbitals 2, on one individual 3 on each 

 side, scutes 236 -\- 87, 230 + 85, 229 + 84, 226 + 81, 

 229 + 83. One individual has a half-scale in front of the 

 left half of the anal. 



This genus is Scotophis of Baird and Girard, 1853 ; it 

 was indicated by Fitzinger, 1843, under the name Pan- 

 therophis having as the type species Coluber guttatus of 

 Linne. 



Mus. Comp. ZooL, Cambridge, Mass., Dec, 1891. 



