REVISION OF THE KING SNAKES. 



167 



Range. — As, here defined, gentilis occurs from western Utah and 

 southeastern Arizona east to the ninety-seventh meridian, north to 

 southern South Dakota, and south probably to northern Mexico. 



Besides the localities included in the accompanying list of specimens 

 Ellis (1913, 92) has recorded a few other stations for Colorado; Yuma; 

 Orchard; Clear Creek, near Golden; Beulah; and Baca County. 



f/O 



fos- 



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Fig. 49. — Map showing- locality recouds for Lampropeltis Triangulum gentilis. 



Variation. — ^Considerable variation with locality is indicated by 

 the ventral plates. The extremes and average for Kansas are about 

 the same as for syspila in that region ; the number is lower in Colorado, 

 and the few from west of the Evockies indicate a still greater reduction. 

 It will be interesting to see whether future specimens bear out the 

 unusual lack of variation in the four Utah specimens now on hand. 

 Subsequent proof of the existence of a distinct race west of the Kockies 

 would not be surprising, but the present material certainly would not 

 justify any separation. 



