G62 



NOETH AMERICAN SNAKES COPE. 



IV. Bands but no spots. 



Four longitudinal black stripes separated by a red stripe on eacli side. 



E. 8. telratamia. 



Three well defined bluish bauds of usual width ; belly black E. s. trillneata. 



A yellow dorsal baud ; the lateral less distiuct ; belly green and with gastros- 

 tegal spots E. s. oisciira. 



Tliese subspecies are distributed as follows: 



Eastern region. 



Austroriparian region. 



E. s. griinineli. | 



E. s. onlinata ' E. s. ordiuata. 



E. s. sirtalis i E. vS. sirtalis . . 



E. s. seniif'asciata , 



E. s. obsciira i E. s.obsciira. 



Central region. 



E. s. (lorsalis. 

 E. 8. parietalis . 



Pacilic region. 



E. s. par'etalis. 

 E. .s. coneinna. 

 E. s. tetratii'nia. 

 E. 8. Irilineata. 

 E. s. piclierinj;ii. 



Eutaenia sirtalis graminea Cope. 

 Proe. U. S. Nat. Mnn., ie88, p. 399. 



Fouud rather rarely from Massachusetts to Indiana, inclusive. 



Eutaenia sirtalis ordinata L. 



Cope, Ciieck ListN. Auier. Batr. Rept., Bull. U. S. Nat. Mus., 1. 1875, p. 41 ; Wheeler's 



Surv. Zoology, v., p. r)4(5. 

 Coluber ordinatus Linn., Sys. Nat. i, 1806, 379; TropuJonatus ordinatus Holbrook, N. 



Auier. Herpetol,, in, 181'2, 4.') PI. xii. Entivnia ordinata Bd. and Oird., Cat. 1853, 



p. 3-2. 



Found sparingly throughout the Eastern and Austroriparian regions 

 except Texas. 



Eutaenia sirtalis sirtalis Liun. 



Cope, Cheek List N. Anier. Batr. Rept., Bull. U. 8. Nat. Mus., i, 1875, p. 41 : do. iu 



Yarrow's Rept. U. S. G. G. Exp. Snrv. W. lOObh Mer., Vol. v, p. 546. 

 Enia'nia sirtalis Bil. and Gird. Cat. 1853, p. 20. 



Found throughout the Eastern and Austroripaiinn regions except 

 Texas. The most western locality" known is Fort Kearney, now Junc- 

 tion City, in the eastern third of Kansas. This form reaches a larger 

 size than any other species or sul)S|)ecies. A melanisticsi)ecimen from 

 Tennessee is in the U. S. National Museum. All i)arts of the body are 

 black, but the spots and stripes may be all traced. 



Butaenia sirtalis semifasciata Cope, subsp. nov. 



This subspecies or geographical race is represented by a number of 

 specimens in the national collection from northern Illinois an<l Wiscon- 

 sin. It resembles in general the U. s. sirtalis in color and i)ro|)ortions. 

 The lower surface and the stripes are olivaceous, and the lateral and 

 median stripes are separated by two rows of spots which occupy the 

 entire width of the space on the skin, but which <lo not touch e.icli 

 other as scale markings, the upper row being i-anged along the median 

 strij)e, and the lower along the lateral stripe. The peculiarity of the 



