1914.] NATURAL SCIENCES OF PHILADELPHIA. 497 



where it is nearly or quite as common as the yellow phase. The 

 usual explanation that the red-winged phase is due to greater humidity 

 is difficult to harmonize with the almost exclusive prevalence of the 

 yellow-winged type in our region, which is more humid than the 

 States west of the Appalachians. 



CHORTOPHAGA Sauss. 

 C. viridifasciata De Geer. 



General Range. — New England States and southern Canada, 

 to Georgia, Minnesota, Colorado and Texas. 



Local Distribution. — Common throughout the Piedmont Plateau 

 and Coastal Plain, probably also in the Appalachian District. Per- 

 haps a secondary introduction on the beaches. Somewhat local in 

 the Pine Barrens, occurring chiefly near human habitations. 



Ecological Distribution. — Occurs in a wide range of habitats; 

 most typical apparently of relatively dry, open grasslands, but not 

 infrequent in more humid surroundings, such as meadowlands; 

 avoids locations that are actually wet. Less frequent in sylvan 

 habitats than in campestral. Exceptional on bare sand and in low 

 scrubby vegetation. 



Locality Records. — 



Appalachian District. — Honesdale (Pa. St. Coll.); Rockville 

 (Pa. St. Coll.); Pocono (A. N. S.). 



Piedmont Plateau.- — Perkasie (Fox) ; cliffs of the Delaware below 

 Kintnersville (Fox) ; Schwenksville (Fox) ; Trappe (Fox) ; <C^ollege- 

 ville (Fox); Eagleville (Fox); Valley Forge (Hebard, Fox); Willow 

 Grove (Fox); Fort Washington (Fox); Edge Hill (A. N. S.); Mt. 

 Airy (Fox) ; Germantown (Fox) ; Pink Hill (Rehn and Hebard, 

 Fox); Castle Rock (Rehn and Hebard). 



Middle District. — Tullytown (Fox) ; Elmwood (Fox) ; Essington 

 (Fox). 



Riverton (Rehn) ; Washington Park (Fox) ; Medford (Rehn) ; 

 Lindenwold (Long) ; Almonesson (Fox) ; Blackwood (Fox) ; Barnes- 

 boro (Fox); Ashland (Fox); Laurel Springs (Fox); Clementon 

 (Fox); Canton (Fox). 



Pine Barrens. — Speedwell (Rehn) ; Bear Swamp (Rehn) ; Clemen- 

 ton (Fox); Penbryn (Fox); Winslow (Fox); Elm (Fox); Folsom 

 (Rehn and Hebard) ; near West Creek (Rehn) ; head of the Tucka- 

 hoe River (Fox); Belleplain (Fox); Mt. Pleasant (Fox); Formosa 

 Bog (Fox). 



Coastal . District. — Ocean View (Fox) ; Petersburg (Fox) ; Sea 



