1892.] Nebraska Snakes, 749 
We have collected specimens from Gage, Nemaha and Sheri- 
dan counties. Dr. Yarrow reports one specimen from North 
Platte, Neb., one from Platte River, Neb. and two from 
ebraska. 
16. EUTÆNIA SIRTALIS SIRTALIS Linn. 
Food and other habits similar to var. parietalis.® 
We have collected specimens from Brown, Dawes and 
_Nemaha counties. Dr. Yarrow reports one specimen from 
Nebraska and another from Western Missouri (Nebr). 
16 a. Eure NIA SIRTALIS DORSALIS Bd. and Gird. 
Food and habits similar to var. parietalis. Common in the 
western part of the State. Specimens were collected in Dawes 
and Sheridan counties. 
Dr. Yarrow reports one specimen from Platte River, Mo. 
(Neb.). 
16 b. EUTÆNIA SIRTALIS OBSCURA Cope. 
Food-and habits similar to var. parietalis. Common in the 
western part of the State; probably the most common variety 
in southwest Nebraska. We have examined specimens from 
Brown, Dawes and Sheridan counties. Dr. Yarrow mentions 
four specimens from Fort Kearney, Neb.; five from Platte 
River, Neb.; two from Nebraska; two from Missouri River, 
Neb.; one from Southern Platte, Neb; four from Platte River, 
Neb.; three from Republican River, Kansas or Nebraska. 
16 c. EUTHNIA SIRTALIS PARIETALIS Say. 
This variety is very common in eastern Nebraska but is 
largely displaced is the western part of the State by vars. dor- 
salis and obscura. 
®Eight specimens which were supposed by us to represent vars. sirfa/is and 
talis were classified by Prof. Cope as “ z ee sirtalis an approach to ater 
parietalis in red color tints.” The author is inclined to believe that all Nebraska’ 
varieties of Æ, sirtalis should be classified as one, notwithstanding great variations. 
There are a number of forms but all intergrade so as to hardly allow even varietal 
distinctions. 
