33. PITUOPHIS | 
teriorly, and usually have dark marks on the keels of the 
scales. The lower surfaces are yellow or yellowish white, 
more or less spotted or blotched with black or dark brown, 
especially near the ends of some of the gastrosteges and 
urosteges. The dark marks on the urosteges may form a 
pair of dark longitudinal subcaudal streaks. 
Length to anus__________.305 910 930 1160 1190 1320 
Length of tail____-__ == 60 195 195 230 218 245 
V ariation.—Sixty-nine specimens all have loreals 1—1. 
The preoculars are 2—2 in forty-four, or 64%; 1—1 in 
twenty, or 29%; and 1—2 in five, or 7%. The postoculars 
are 3—3 in forty, or 59%; 4-4 in thirteen, or 19%; 3—4 
in eleven, or 16%; and 2—3, 2—4, 4-5, and 5—5 each 
in one. The temporals are 4—4 in twenty-three or 34%; 
3—3 in fifteen, or 22%; 3—4 in twelve, or 18%; 4—5S in 
five, or 7%; 5—5 in five, or 7%; 3—5 in two, or 3%; 
and 2—2, 2—3, 2—4, 46, and 5—6 each in one. The 
supralabials are 8—8 in thirty-three, or 48%; 9—9 in 
nineteen, or 27%; and 8—9 in seventeen or 25%. The 
infralabials are 13—13 in thirty-four, or 49%; 13—14 
in ten, or 14%; 12—12 in eight, or 12%; 12—13 in seven, 
or 10%; 1414 in three, or 4%; 11—13 in two, or 3%; 
and 10—11, 11—11, 11—12, 12—14, and 14—15 each in 
one. The scale rows are 33, in thirty-seven, or 54%; 31 in 
twenty-five, or 36%; 35 in six, or 9%; and 29 in one, or 
1%; the average is 32.4 rows. The gastrosteges vary in 
number from 217 to 243, males having from 217 to 243, 
females from 218 to 240; the average in 43 males is 228, 
in twenty-five females, 231. The urosteges vary from 62 
to 85, males having from 62 to 85, females from 62 to 83; 
the average in thirty-nine males is 76, in twenty-four fe- 
males, 70. 
The dark blotches between head and anus in 71 speci- 
