33. PITUOPHIS 705 
head appears little distinct from it. The snout is long, 
narrowly rounded, and projecting beyond the lower jaw. 
The head plates show many variations, but when typical 
are normal except that there are four prefrontals. The 
nasals usually are distinct. One or two preoculars, two to 
four postoculars, and a loreal are present. Temporals are 
many and very variable. The scales are in 27 to 37 rows, 
the dorsals keeled, some of the lateral rows smooth. The 
anal plate is single. Urosteges are in two series. The eye 
is large, with round pupil. 
The snakes of this genus are popularly known as Gopher 
or Bull Snakes. Seven kinds occur within the geographical 
limits of this work. The differences between them are set 
forth in the following table of averages and synopsis of 
species and subspecies. 
Table of Average Differences in Pituophis 
» 12/2] 313 = 
w ios) Pu} a P L 
Average No. of I E g e a g e 
eS ae i as: 
Specimens 103 28 69 28 29 16 15 
* * * ¥n5 cas a9 
Gastrosteges ou 219 | *228 234 227 244 
: $220 | f224 | tear | t239 | f235 | t237 
216 = 168: * 76. |" "76 #766 1) "16 
Urosteges 9 7 4 3] 62 
‘ 164] t 60] t 70] f 59] t 60] t 57 
Scale-rows Qe wei) les. |) Blade | 92.9 |) 29.) | seal 34 
Preoculars 2-2 | 2-2] 2-2] 2-2] 1-1 I-1 | 2-2 
Supralabials 8 8 8 8 8 8 9 
Body blotches 70 58 74 56 58 46 44 
Tail blotches QTean in etoe (22 Biers as | Toast 12.9, || xe 
~-*Males. +Females. 
