Vol. VIII] VAN DENBURGH AND SLEVIN-GARTER-SNAKES 237 



altitude 6,700 feet; and number C967 is from the south side of 

 Sugar Loaf, altitude 6,700 feet. 



Three of the specimens from Tulare County (Nos. C^»1U, 

 C2811 and C2812) were collected at Jackass Meadow, at an 

 altitude of 7,750 feet. The other specimen (C2813) was 

 secured at Monache Meadow, altitude 8,000 feet. 



Material— We have studied ninety-seven specimens from 

 these localities. 



Variation.— These specimens show the following varia- 

 tions: 



The loreal is 1—1 in all. The preoculars are 1—1 m eighty- 

 nine, or 93% ; 1-2 in five, or 5% ; and 2-2 Jn two or 2%. 

 The postoculars are 3—3 in ninety-two, or 95% ; 3--4 m tour, 

 or 4% ; 2-3 in one, or 1%. The temporals are 1+2-1+2 m 

 seventy-one, or 75%; 14-2-1+3 in sixteen, or 17%; 1+3- 

 1+3 in seven, or 7%; and 1 + 1-1 + 1 m one, or 1%. The 

 supralabials are 8-8 in ninety-one, or 94% ; 7--8 m two, or 

 2% ; 8-9 in one, or 1% ; 9-9 in one, or 1% ; and 7-6 m one, 

 or 1% The infralabials are 10—10 in eighty-two, or 8d/c; 

 9-10 'in ten, or 10% ; 9-9 in two, or 2% ; 8-10 in one or 

 1%- 10—11 in one, or 1%; and 11—11 in one, or 1%. 1 he 

 scale-rows are 19—19—17 in twenty-two, or 23%; all the 

 others (777o) have 21 rows of scales, but the formula varies 

 being 19—21—19—17 in thirty, 21—19—17 in seventeen, 21 

 _?1_17 in twelve, 19—21—17 in twelve, and 20—21—17 in 

 two The gastrosteges vary from 151 to 179, males having 

 from 159 to 179, females from 151 to 175 ; the average m fifty 

 males is 171, in forty-six females, 163.4. The urosteges vary 

 from 70 to 101, males having from 78 to 101, females from /O 

 to 88, the average in forty males is 86.4, in thirty females, 78.5. 

 This variation is shown in full in the following table of 

 scale-counts. 



