162 



it is a northern species and more liable to be found in the northern 

 section of this State than in the southern. While it has the char- 

 acters of the genus Callopeltis, as giA'en above, it differs from the 

 Pilot Snake in the color being light brown with four-sided chocolate- 

 colored blotches, scales in twenty-five rows and the ventral plates 

 not over two hundred and ten. We respectfully invite correspon- 

 dence upon this species and desire specimens of the same. 



Fig-. 12b. — Diagram showing the percentages of 

 Food Items of Pilot Snake (Callopeltin obsolctux) 

 found during the months of June and July only; 

 46 per cent. Birds; 161/2 per cent. Mice; 121/2 per 

 cent. Insects; 8% per cent. Unidentified Mammals; 

 4 per cent. Weasels; 4 per cent. Birds' Eggs. 



Very little is known or published concerning the food of the 

 Fox Snake. Trof. Cojjc has published that it feeds on "vermin of 

 various kinds," and also that he found it eating a rabbit. It is 

 probable that to a great extent its food consists of mice, rats, rab- 

 bits, frogs, toads and such birds as it can capture. 



No. 14. Oj)heod?-ys wstivus (L.) (ireen Snake. Plat« XXVI. 



Til the State of Pennsylvania there are two species of snnkes 

 gi-een in color. One of these (No. 14) is known as the Oregon Snake, 

 and th(; other as the (Jrass Snake. The fornu'r is rare in this 

 State and the latter rather common. While both are small, harm- 

 less, uniformly green above and yellowish bcMieath, they differ 

 considerably in certain sliu(hirnl cliaracters. This species can be 

 called the 'Keeled Green Snake," because all the- scales have keels 

 on them or are roughened. The Grass Snake (No. 15) can be called 



