Vol. VIII] VAN DENBURGH AND SLEVIN— GARTER-SNAKES 



245 



The specimens from the Pine Forest Mountains, Nevada, 

 were collected at altitudes of 4300, 6000, 7800, and 8400 feet. 



Eleven specimens from the Warner Mountains, Modoc 

 County, California, collected at altitudes of from 5000 to 7300 

 feet on Parker Creek and Squaw Peak (Nos. C2164 to 

 2179) have not been included in the analysis given above. 

 No. 2164 has the coloration of nearly typical T. o. vagrans. 

 The others show various degrees of approach to the coloration 

 of T. 0. elegans. No. C2166 is very close to the elegans style. 

 No. C2168 is similar in coloration to the Klamath Falls snakes, 

 but all of these Warner Mountain specimens have single pre- 

 oculars. It is probable that the type of Cope's EutcBnia elegans 

 brunnea, from Fort Bidwell, Modoc County, is such a speci- 

 men. Scale-counts of the Warner Mountain specimens are as 

 follows : 



Thamnophis ordinoides biscutatus (Cope) 



Klamath Garter- Snake. 



Diagnosis. — Normally with eight supralabials ; twenty-one 

 or twenty-three rows of scales ; dorsal line distinct; dorsal spots 

 invading edges of dorsal line but often not showing by reason 

 of the dark ground color; often with dark markings on the 

 gastrosteges ; usually more than one preocular. 



Type Locality. — Klamath Lake, Oregon. 



Synonyms. — It is probable that Yarrow's Eutcenia Henshawi 

 from Fort Walla Walla, Washington, may have been based 

 upon a specimen of this subspecies. Ruthven included these 

 snakes under the name T. o. elegans. 



