FURTHER RESEARCHES ON NORTH AMERICAN ACRIDIID^. 43 



A dozen examples of this form were taken. Neither this nor the 

 preceding were secured in sufficient series to enable satisfactory con- 

 clusions regarding the relation of the two forms in the territory under 

 examination to be formulated (see remarks following 5*. obscurd). 



Schistocerca americana Drury. 

 Georgia: Trenton. 

 Alabama: Valley Head. 

 Mississippi: Gulf port; Nugent. 

 Louisiana: Franklin. 



Arkansas: Dardanelle; Fayetteville ; Rich Mountain; Van Buren; Winslow. 

 Indian Territory: Caddo; Wilburton. 

 Texas: Denison; Wichita Falls. 

 Oklahoma: Cache; Shawnee. 



The data given above refer to actual captures. This species is 

 one of the most ubiquitous locusts of the Southern States, and was 

 either seen or secured at practically every point visited. Although 

 very plentiful in places, at no point was it met with in seriously 

 destructive numbers. 



Schistocerca lineata Scudder. 

 Indian Territory: Caddo. 

 Texas: Clarendon. 

 Oklahoma: Cache; base of Mount Sheridan. 



Locally plentiful, varying much in color of hind tibiae, which are 

 sometimes infuscated throughout, on the basal two-thirds alone, or 

 even luteous with only the spines black-tipped. 



It is usually found among the sunflowers and other coarse weeds 

 along gullies, roadsides, and fences. 



Schistocerca obscura Fabricius. 

 Mississippi: Hattiesburg. 

 Louisiana: Franklin; Milneburg. 

 Arkansas: Ashdown. 

 Indian Territory: Caddo. 

 Texas: Denison; Wichita Falls. 



This is a robust, dark-colored species, which is common and 

 widely distributed through the Southern States, usually occurring in 

 coarse weeds and grasses in swamps and along streams.* 



Much work remains to be done upon this genus in the way of 

 careful collecting and observation, securing large series, before any- 



*This species was accidentally included under the head of alutacea in my 

 first report (Publication No. 18, Carnegie Institution of Washington). All of 

 the specimens there reported from Savannah and Tybee Island, and a part of 

 those from Carrabelle, belong to this species. 



