Vor. IIT] VAN DENBURGH AND SLEVIN—ARIZONAN REPTILES 419 
No. 17547, from Cave Creek, has scale rows 31, gastro- 
steges 235, anal single, urosteges 57, supralabials 8-8, infra- 
labials 12-12, preoculars 1-1, postoculars 3-3, temporals 4+-4, 
loreal 1-1, posterior genials shorter. 
67.—Thamnophis vagrans (Baird and Girard) 
Our collection includes only one Arizonan specimen of this 
snake. It (No. 35266) was caught Sept. 1-3, 1912, on Oak 
Creek, Coconino County, with numerous specimens of Tham- 
nophis eques and T. angustirostris. All three species were 
found in the water or on the rocks in the stream. 
No. 35266 has 21-19-17 scale rows, gastrosteges 148, anal 
entire, urosteges 76, supralabials 8-8, infralabials 10-10, pre- 
oculars 1—1, postoculars 3-3, loreals 1-1, temporals 1+2, 
posterior genials slightly shorter. The dorsal line is rather 
indistinct except anteriorly, but it can be seen that the upper 
spots encroach upon it. The lateral lines are upon the second 
and third rows of scales. There are no definite dark nuchal 
blotches or light postoral crescents. The gastrosteges show 
only a little dark brown or black along their anterior edges. 
This species has been recorded from Fort Verde, Fort 
_ Whipple, San Francisco Mountain, Mineral Spring and Pres- 
cott, Arizona. 
68.—Thamnophis eques (Reuss) 
We have at hand twenty-one specimens of this snake. Three 
(Nos. 17543, 17544, and 17545) are from Cave Creek, Mari- 
copa County, May 9, 1910. Ten (Nos. 35256 to 35265) were 
secured at Oak Creek, Coconino County, Sept. 1-3, 1912. 
Two (34169 and 34170) were shot in Sabino Canyon, Santa 
Catalina Mountains, April 4, 1912. The other six (34277 to 
34282) were collected in the foothills of the Catalina Moun- 
tains near the steam pump eighteen miles north of Tucson, 
May 10-18, 1912. 
All of these specimens show the normal coloration with 
lateral lines on the second and third rows of scales, prominent 
dark nuchal blotches and no light postoral crescents. Varia- 
tion in scale characters is given in the following table: 
