FURTHER RESEARCHES ON NORTH AMERICAN ACRIDIIDJE. 51 



tibiae and red femora, are very attractive. The types of palmeri in the 

 Scudder collection are evidently alcoholic material from which all 

 brilliancy of color had departed when described. I have little doubt 

 that the M. sanguineus of Bruner (Colo. Agric. Coll. Bull. 94, p. 63) 

 is identical with this species. 



Melanoplus plebejus Stal. 



Indian Territory: Caddo; Wilburton. 

 Texas: Wichita Falls. 



This, while a campestrian species, is practically a thicket-dweller, 

 living among the denser growth of grasses and other herbage in moist 

 prairie meadows. 



Melanoplus propmquus McNeill-Scudder. 

 Mississippi: Gulf port. 



Common in grassy areas of the Gulf Strip of the I,ower Austral 

 coast plain. 



Melanoplus regalis Dodge. 



Texas: Amarillo; Quanah. 



This handsome species is singularly like Aeoloplus regalis in ap- 

 pearance, nearly equaling it in size, closely resembling it in color and 

 general form, but at once distinguished from it by the non-tuberculate 

 subgenital plate of the male, the dull-pointed valves of the ovipositor 

 of the female, and the cherry -red coloring of the lower sulcus and 

 inner face of the hind femora. 



Three examples of each sex were secured among weeds. 



Melanoplus robustus Scudder. 



Arkansas: Blue Mountain Station; Dardanelle; DeQueen; Eagleton; Maga- 

 zine Mountain; Mena; Ola; Rich Mountain; Rich Mountain Station; 

 Winslow. 



Indian Territory: Caddo Hill; Haileyville; Howe; South McAlester. 



Texas: Denison. 



Oklahoma: Cache; base and summit of Mount Sheridan. 



This robust species is a characteristic inhabitant of woodlands, 

 usually xerophytic, where it hops about among the underbrush with 

 vigorous leaps (see pi. 5, fig. 2). It is very variable in wing-length, 

 but not dimorphic, the tegmina of the male ranging from 12 to 21 mm., 

 of the female from 13 to 24 mm.; and also in the color of the hind 

 tibiae, the distal two-fifths of which range from pale yellow to bright 

 coral-red. Frequently, especially in examples with yellow tibiae, all 

 infuscation distad of the basal pale annulus is lacking except on the 

 tips of the spines. 



