13. COLUBRIDJE 



In Oregon, P. c. heertnanni has been taken near Kla- 

 math Falls, Klamath County. The positive identification 

 of gopher-snakes which have been collected at The Dalles, 

 Wasco County, Willows, Gilliam County, Heppner, Mor- 

 row County, Umatilla, Umatilla County, Burns, Harney 

 County, and Juntura, Malheur County, must await re- 

 examination of the specimens. Those from Malheur and 

 Harney counties may not improbably be P. c. deserticola. 



California specimens have been collected in Modoc 

 (Canby, Goose Lake Meadows, Sugar Hill, between Alturas 

 and Davis Creek, Dry Creek in the Warner Mts.), probably 

 Shasta (McCloud River), Tehama (Tehama), Glenn 

 (Fruto, Winslow), Butte (between Live Oak and Gridley), 

 Yolo (Grand Island Landing), Placer (Lander near Col- 

 fax), El Dorado (Fyffe, Riverton), San Joaquin (Tracy), 

 Merced (Los Bafios, Snelling), Mariposa (between Kinsley 

 and MaCauley's Stage Station, Coulterville, Pleasant Val- 

 ley), Madera (five miles south from Madera), and Fresno 

 (King's River, Dunlaps, Clovis) counties. 



Remarks. — The snakes which are here referred to Pituo- 

 phis catenifer heertnanni are intermediate in characters be- 

 tween P. catenifer catenifer and P. catenifer deserticola. 

 They agree with the former subspecies in the small number 

 of their gastrosteges, and with the latter in the possession of 

 fewer dorsal spots. Individual variation, of course, often 

 makes it impossible positively to identify single specimens, 

 but real geographic variation, nevertheless, is evident in 

 series of specimens, and it seems best to recognize this differ- 

 ence by name. 



