246 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Range. — This subspecies is or was exceedingly abundant 

 about the Klamath lakes. Thence it ranges east to Goose Lake, 

 Modoc County, California, west to Josephine County, Oregon, 

 and Del Norte County, California. Farther north it occurs 

 near Puget Sound, Washington, and in British Columbia. 



We have examined specimens from the following locali- 

 ties : — 



1. Lillooet River Valley, British Columbia. 



2. San Juan Islands, San Juan Co., Washington. 



3. Rogue River, Grants Pass, Josephine Co., Oregon. 



4. South Fork, Coquille River, 20 miles above Myrtle Point, 

 Coos Co., Ore. 



5. Gasquet, Del Norte Co., California. 



6. Klamath Falls, Klamath Co., Ore. 



7. Lower Klamath Lake, Siskiyou Co., Cal, 



8. Goose Lake, Modoc Co., Cal. 



9. Davis Creek, Modoc Co., Cal. 



Material. — More than two hundred and fifty specimens have 

 been studied by us. 



Variation. — The variations shown by these specimens are as 

 follows : 



The loreal is 1 — 1 in all specimens. Preoculars are 2 — 2 in 

 one hundred and fifty-nine, or 63%; 1 — 2 in twenty-five, or 

 10%; 1 — 1 in sixty-three, or 25%; and 2 — 3 in one. Post- 

 oculars are 3 — 3 in two hundred and thirteen, or 80% ; 3 — 4 in 

 twenty-six, or 10% ; A — 4 in five, or 2% ; 2 — 3 in three, or 1% ; 

 and A — 1 in one. Temporals are 1+2 — 1+2 in one hundred 

 and ninety, or 777c ; 1+3 — 1+3 in sixteen, or 6% ; 1+2 — 1+3 

 in thirty-nine, or 15%. The supralabials are 8 — 8 in two hun- 

 dred and thirty-two, or 92% ; 7 — 8 in eleven, or 4% ; and 7 — 7 

 in four, or 1%. The infralabials are 10 — 10 in two hundred 

 and twenty-two, or 88%; 9 — 10 in thirteen, or 5%; 9 — 9 in 

 eight, or 3%; 10 — 11 in two, and 8 — 8 in one. The scale- 

 rows are 21 — 21 — 17 in two hundred and sixteen, or 87%; 

 21—19—17 in nine, or 3% ; 21—23—17 in six, or 2% ; 21— 

 17—17 in three, or 1%; 19—17—17 in three, or 1%; 19— 

 19_17 in two, 19—17—15 in two, 23—19—17 in two, 23— 

 21 — 19 in one, 17 — 17 — 17 in one, and 20 — 21 — 17 in one. 



