294 PROCEEDINGS OF THE ACADEMY OF [April, 



AV, (normally a or b but ranging to f , x but often u) , 3 ; pennsyl- 

 vanicus. 



AW, (normally d but ranging from a to f , w but often u) , 3 ; luc- 

 tuosus. 



Of these, scudderianus is apparently an adaptation to an arenaceous 

 surrounding, it is found locally as far north as Indiana, at the more 

 northern points showing an average less robust form and smaller 

 size (such material constituting the bases of the names scudderianus, 

 rubens and arenaceus), while in southern Florida and on the Gulf 

 coast an average more robust form and larger size is developed 

 (upon such material firmus was in part founded). 



The other three variants intermingle more generally, though 

 individuals of each occasionally show the transition toward the 

 scudderianus variant. The darkest of these, neglectus, is found in 

 the north, only appearing well defined, in the area here considered, 

 in the Appalachian mountains south as far as their highest points 

 in north Georgia. Over the entire region pennsylvanicus appears 

 generally, but is the most frequent condition met with on the Pied- 

 mont plateau, while luctuosus is the normal condition everywhere on 

 the coastal plain in the regions here considered. 160 



Material can be grouped for convenience under these variant 

 designations, but in such treatment it must be remembered that 

 nearly every specimen of each series will show different degrees 

 of coloration, femoral and ovipositor length and every other feature, 

 excepting those diagnostic qualities common to all of the variants 

 of G. assimilis. 



In the paper in which these facts are fully treated, the exact con- 

 dition of the material from the collections at present being studied 

 is given, 161 the localities being: Chestertown, Glen Echo and 

 Jennings, Maryland; Washington, District of Columbia; Roslyn, 

 Virginia; Winter Park and Lake Waccamaw, North Carolina; Flor- 

 ence, Sullivan Island and Yemassee, South Carolina; Rabun Bald, 

 Black Rock Mountain, Tuckoluge Creek, Clayton, Atlanta, vicinity 

 of Stone Mountain, Augusta, Jesup, Waycross, Hebardville, Billy's 

 Island, St. Simon's Island, Cumberland Island, Fargo, Chester, Bain- 

 bridge and Spring Creek, Georgia, and Atlantic Beach, Pablo Beach, 

 Burnett's Lake and Live Oak, Florida. 



160 It is this condition which the present authors had frequently recorded as 

 G. rubens from the southeastern United States. 



161 Proc. Acad. Nat. Sci. Phila., 1915, pp. 305-307, (1915). 



