Vol. VIII] VAN DENBURGH AND SLEVIN— GARTER-SNAKES 217 



52. Requa, Del Norte Co., Cal. 



53. Union Bay, Bayne Sound, B. C. 



54. Mt. Rainier, Pierce Co., Wash. 



55. Drain, Douglas Co., Ore. 



56. Cow Creek, Douglas Co., Ore. 



Material. — About three hundred and twenty-five snakes of 

 this subspecies have been examined by us in the preparation of 

 this paper. 



Variation. — Three specimens have no loreal plates ; one has 

 a loreal on one side only; the others have the normal loreal 

 1 — 1. The preoculars are 1 — 1 in two hundred and seventy- 

 nine, or 86% ; 1 — 2 in twenty-six, or 8% ; and 2 — 2 in twenty, 

 or 6%. The postoculars are 3 — 3 in two hundred and eighty- 

 four, or 87% ; 2 — 3 in twenty-four, or 7% ; 2 — 2 in sixteen, or 

 5% ; and 1 — 2 in one. The temporals are 1-f 2 — 1+2 in two 

 hundred and eighty-nine, or 89%; 1+2 — 1 + 1 in eighteen, or 

 6% ; 1+2—1+3 in eight, or 2% ; 1 + 1—1 + 1 in four, or 1% ; 

 and 3+3 — 3+3 in three, or 1%. The supralabials are 7 — 7 in 

 two hundred and eighty-three, or 85% ; 7 — 8 in twenty, or 6% ; 

 7 — 6 in nine, or 3% ; 8 — 8 in five, or 2% ; 6 — 6 in four, or 1% ; 

 5 — 5 in one, and 8 — 6 in one. The infralabials are 8 — 8 in one 

 hundred and seventy-nine, or 55% ; 8 — 9 in fifty-eight, or 18% ; 

 8—9 in fifty- four, or 17%; 7—8 in sixteen, or 5%; 7—7 in 

 nine, or 3%; 9—10 in six, or 2%; and 6 — 7 in two. The 

 scale-rows are 17 — 17 — 15 or 17 — 15 — 15 in two hundred and 

 thirty-six, or 72% ; the other 28% all have 19 rows, but the 

 formula may be 17—19—17—15, 17—19—17, 19—19—17, 

 19_19_15, 17_19_17, or 17—18—19—17. The gastro- 

 steges vary in number from 135 to 162, males having from 138 

 to 162, females from 135 to 154; the average in one hundred 

 and eighteen males is 149.2, in one hundred and fifty-eight 

 females, 144.8. The urosteges vary from 50 to 81, males hav- 

 ing from 56 to 81, females from 50 to 72; the average in 

 ninety-six males is 70.2, in one hundred and twenty-eight 

 females, 60.9. 



This variation is shown in full in the following table of 

 scale-counts. 



