33. PITUOPHIS 



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 



