694 NOTES ON BVTLEE'S GARTER SNAKE— STEJNEGER. vol. xvii. 



stantiates the characters relied upon for its separation. The number 

 and size of the temporals (1 + 1) is the same, and the lateral stripe 

 involves distinctly the second, third, and fourth scale rows. The size 

 and shape of the head is also quite characteristic, it being remarkably 

 small and conical. Moreover, the eye is proportionately much smaller 

 than in any of our ThamnopMs species, with the exception of T. leptoce- 

 phalus and T. vagrans. 



This smallness of the eye is so striking, and it reminds one so much 

 of the last-mentioned species, that I have a strong suspicion that the 

 specimen which E. W. Nelson collected near Chicago, 111., in 1874, and 

 identified with T. vagrans* was, in reality, a third specimen of the rare 

 T. butleri, about the geographical range of which we can at present 

 only guess. It is almost needless to add that T. vagrans does not occur 

 in Illinois. 



For the sake of completeness I add the synonymy of the species 

 which is the subject of the present article. 



1889.— Eula'nia butleri, Cope, Proc. U. S. Nat. Miis., xi, 1888, p. 399. 



1892.— Entamia butlerii, Cope, Proc. U. S. Nat. Mus., xiv, 1891, p. 6ol.—Eutainia Mt- 



Jerii, Hay, Batr. Rept. Indiana, p. 120 (1892;. 

 1893. — Tropidonotus ordinaius var. huiJerl, Boulenger, Cat. Snakes Brit. Mus., i, 



p. 212. 



*See Davis and Rice, Bull. Chicago Acad. Sci., i, iii, 1883, p. 30. 



