40. THAMNOPHIS 799 
(road to Nestucea between Grand Ronde and Dolph), Lin- 
coln (road between Chitwood and Siletz River), Benton 
(road between Pioneer and Siletz River, Alsea River near 
Alsea), Linn (Albany), Lane (Elmira, June Lake and 
Siuslaw River, Junction Lake and Deadwood Creek), Coos 
(South Fork Coos River, Sumner, Coquille, Empire, Myrtle 
Point), Douglas (Takeneitch Creek, Camas Mountains), 
Curry (Langlois, Sixes River, Port Orford, Elk Creek, 
Flores Creek, Rogue River, Harbor), and Jackson (Battle 
Creek near Eagle Point) counties. 
From California, from Del Norte (Smith River, Cres- 
cent City, Requa), Siskiyou (Sisson), Shasta (Burney 
Creek), Humboldt (Redwood Creek, Orick, Carlotta, 
Maple Creek, Samoa, Eureka), Mendocino (Covelo, Gar- 
cia River, Sherwood, Willets, Mendocino, Albion River 
near Comptche), Sonoma (Kidd Creek, Skaggs Springs), 
Napa (Napa), and Marin (Inverness, Point Reyes Station, 
Tocaloma, Willow Camp) counties. 
It is evident that 7. sirtalis concinnus is not confined to 
the extreme northwest, but, on the contrary, occupies a strip 
close to the coast south nearly or quite to San Francisco Bay. 
In the extreme north 7. sirtalis concinnus ranges east far 
from the coast, for the specimens from northern Idaho are 
of this dark race and it is very possibly may be that Cope’s 
type of trilineata from Fort Benton, Montana, also belongs 
here. A little farther south, however, concinnus does not 
range far from the ocean, as is shown by the specimens from 
Klamath County, Oregon, and Modoc County, California, 
which represent the race 7. sirtalis infernalis. 
Remarks.—Although there is much variation in the 
amount of dark pigment and in the width of the dorsal line, 
these characters are sufficiently constant to serve for the 
