58 NEW NORTH AMERICAN MELANOPLI (oRTIIOPTERa) 



arc there present. In some of the juveniles the caudal femora are immaculate, 

 the majority having, however, the entire external pagina black, except for 

 invasions of the light general coloration. These invasions, when decided, break 

 the black area into characteristic Melanoploid bands, which are continued 

 across the dorsal surface of the femora. 



Like the other species of this genus, the present is probalily 

 strictly geophilous, agreeing with huachucana in being an in- 

 habitant of the Encinal, or Ilcgion of Oaks, in Arizona. The 

 entire series was taken at elevations of from 5400 to 0500 feet. 



Specimens Examined: 115; 20 males, 76 females and 19 immature individuals. 



Arizona: Bill Williams Mountain, IX, 14, 1917, (O. C. Pohng), 1 d^, 

 [Ilebard Cln.]. Prescott, VII, 5 to VIII, 24, 1917, (Poling; Kusche), 19 d", 

 68 cf , 19 juv., type, allotype, paratypes, [Hebard Cln.]. Granite Peak, Pres- 

 cott, VIII, 17, 1917, (J. A. Kusche), 4 9, [Hebard Cln.]. Mount Union, 

 Prescott, VIII, 15, 1917, (J. A. Kusche), 1 c?, 3 9, [Hebard Cln.]. Senator, 

 Yavapai County, VIII, 12, 1917, (J. A. Kusche), 1 9, [Hebard Cln.]. 



Bradynotes chilcotinae new species (Plate III, figs. 6, 7 and 8.) 



This species is readily separable from any of the previously 

 known forms by the large triangular furcula of the male and 

 other genitalic features in this sex. 



In form it agrees best with B. caurus Scudder, the definition 

 between the disk and lateral lobes of the pronotum being weakest 

 in these speci(>s. In coloration it is dark, showing the greatest 

 reduction of the brilliant colors found on the caudal limbs in 

 the majority of the species of Bradynotes. 



The caudal til^iae are buffy, as in B. albida Hel)ard, B. excelsn 

 Rehn and B. satur Scudder, but these memlxn's are often strongly 

 suffused in the present insect. 



The male cerci often fail to reach as far distad as the apex of 

 the supra-anal plate and are as slender at their ai)i('es as in 

 B. conipacta IVIorse^". The male supra-anal i)lat(^, though subject 

 to considerable variation, is seen to be never of the simple, long- 

 er type developed in B. ohcsa (Thomas) and its closer allies, in 

 which the latei'al margins are weakly concave convergent to 

 1lic broadly rounded apex. 



Type. — cf ; liiske Creek, Chilcotin, British Columl)ia. July 

 22, 192]. (]<]. R. Buckell.) [Canadian Nalional (\)llec1iou.l 



Size iiicdiurn hirge for I he genus; form heavy, lliougii not as licavy as iti 

 ulie.sa and its closer allies; surface moderately pilose. Head broad and full, 

 vertex gently tumid; fastigium shallowly concave, the lateral margins thick, 



"'Compare, Trans. Anicr. En{. Soc, XLV, pi. xxix, lig. 11, (1919). 



