826 13. COLUBRIDE 
whole length and continuous with the light-colored sides 
of the head is a pale lemon-yellow stripe, brightest anter- 
iorly and becoming dusky and merging with the ventral 
color-tract posteriorly. This stripe involves the second 
and part of the third scale rows above the gastrosteges on 
either side. The sides of the head exhibit several vertical 
dusky markings; and the otherwise dark brown back is 
faintly flecked, along either side of the median stripe and 
just above the lateral stripes, with whitish scale edgings. 
There is not a trace of red anywhere. The bright yellow 
median dorsal stripe is a conspicuous feature in the colora- 
tion of this snake.” 
Length to anus —.....__.354 395 420 477 492 570 
Wenathvotetatles se -= 156 125 133 162 161 132 
V ariation.—Ninety-seven specimens show the following 
variations: 
The loreal is 1—1 in all. The preoculars are 1—1 in 
eighty-nine, or 93%; 1—2 in five, or 5% 3 and 2—2 in 
two, or 2%. The postoculars are 3—3 in ninety-two, or 
95%; 3—4 in four, or 4%; 2—3 in one, or 1%. The 
temporals are 1+2—1+2 in seventy-one, or 75%; 1+2— 
1+3 in sixteen, or 17%; 1+3—1+3 in seven, or 7%; 
and 1+1—1-+1 in one, or 1%. The supralabials are 8—8 
in ninety-one, or 94%; 7—8 in two, or 2%; 8—9 in one, 
or 1%; 9—9 in one, or 1%; and 7—6 in one, or 1%. The 
infralabials are 10—10 in eighty-two, or 85%; 9—10 in 
ten, or 10% 3 9—9 in two, or 2% 3 8—10 in one, or 1%; 
10—11 in one, or 1%3 and 11—11 in one, or 1%. The 
scale-rows are 19—19—17 in twenty-two, or 23%; all the 
others (77%) have 21 rows of scales, but the formula 
varies, being 19—-21—19—17 in thirty, 21—19—17 in 
seventeen, 21—21—17 in twelve, 19—21—17 in twelve, 
and 20—-21—17 in two. The gastrosteges vary from 151 
