1910.] 



NATURAL SCIENCES OF PHILADELPHIA. 



645 



this species from Raleigh, the only previous record from either of the 

 Carolinas. 



Nemobius fasciatus (Do Geer). 



From a careful study of a considerable series of material belonging 

 to this and the following form, it seems necessary to consider them but 

 geographic races of one and the same species. The evidence of inter- 

 gradation is so great that it is almost impossible to place specimens 

 from certain localities in one or the other of the two forms. As the 

 only character by which socius could be separated from fasciatus is 

 the length of the ovipositor relative to that of the caudal femur, the 

 following measurements of the female individuals in the present series,, 

 in addition to some typical specimens of socius from other localities, 

 mav be of interest. 



* T = Thomasville, Ga. 



C = Cedar Keys, Fla. 



R = Raleigh, N. C. 



S = Sulphur Springs, N. C. 



P = Mt. PLsgah, N. C. 



B = Bayville, Va. 

 Each letter indicates a specimen. 



One series consists of five females from Sulphur Springs, secured 

 September 17 and 24, 1904, and thirteen males and four females from 

 4,500 feet elevation on Mt. Pisgah, captured October 1, 1904. A 



