126 



well founded, to the effect that it will hang on uatil thunder is heard 

 or until sundown. The description is as follows: 



Shell high in front, low behind; carapace with three moderate 

 keels; margin sharply serrate behind; head large, powerful, not com- 

 pletely retractile; eyes close together, beak hooked; tail with sharp, 

 tubercular crest above, moderate plates beneath, length about equal 

 to shell; plastron small, forming a cross; claws 5-4, web small. Color 

 of carapace is dark olive or brown, plastron dull yellow. Plates of 

 carapace with concentric and radiating grooves, and some radiating 

 black dashes. Carapace of young extremely rough, of old, rather 

 smooth, both often moss-covered. Neck long, chin decorated with 

 small barbels. The barbels under the chin are very sensitive, and no 

 doubt serve the purpose of making the creature aware of any un- 

 evenness or obstruction on the bottom of muddy streams in which it 

 crawls. 



The Snapping Turtle is found from Canada to the Equator and 

 throughout Ontario, occurring also westward to near the Rocky 

 Mountains. It is one of the most common, widely distributed and 

 best known turtles. The specific name ^'serpentina" refers to the 

 serpent-like appearance of the head and neck. 



Our collections from Pennsj'lvania are as follows: 



Bucks county, Taylorsville. 



Bucks county, Cox, E. C. Buckingham. 

 Clearfield county, Myer, G. L., Mahaffey. 

 Cumberland county, Heciiuian, J. P., Newville. 

 Cumberland county, Zoological Division, E'berlys Mills. 

 Dauphin county, Buffington, H. E., Lykens. 

 Dauphin county, Zoological Division, Harrisburg. 

 Delaware county, Lehman, G. H., Essington. 

 Erie county, Selden, F. H., Cranesville. 

 Erie county, Baron, E. A., McKean. 

 Fulton county, Jackson, R. L., McConnellsburg. 

 Indiana county, Wehrle, R. W., Indiana. 

 Luzerne county, Campbell, E. W., Pittston. 

 McKean county, Lehman, J. P., Port Allegany. 

 Perry county, Showalter, C. E., Landisburg. 

 Potter county, Lehman, F. A., Coudersport. 

 Somerset county, Moore, P. K., Trent. 

 Tioga county, Shephard, J. D., Wellsboro. 

 Venango county. Bean, Lavelle, Emlenton. 

 Warren county, Simpson, R., Warren. 



