2 1 riiocEEDiya s of the x i tjoxa l ji use cm. vol. xx. 



less infuscated. the upper face indistinctly biniaculate with fuscous, 

 the whole jjeniculation excepting the lower lobe beyond its base 

 bhickisli; hind ti))iae glaucous (pale yellowish in alcoholic siieciniens), 

 the spines bla<'k to their base, or excepting the extreme base, ten to 

 eleven, rarely twelve, in number in the outer series. Extremity of 

 male abdomen very feebly clavate, scarcely recnrved, the supraaual 

 ])latc triangular, about eijually long an<l broad, the sides straight, the 

 tip angulate; fnrcula consisting of a pair of subap[)roxiinate sliglit 

 and ecpial fingers, bluntly tipi)ed, hardly more than a (jnarter the 

 length of the supraanal plate; cerci very slender, comi)ressed, rapidly 

 narrowing at extreme base, beyond equal, slightly and broadly sulcate 

 exteriorly, directed backward and a little inward, tapering and bluntly 

 rounded at tip, s<'arcely reaching the tip of the supraanal jdate; sub 

 genital jdate truncato-conical, much broader than long, incurved at 

 base, the lateral and ai)ical margins in one plane, entire. 



Length of body, nuile, 17.5 mm., fenuile, 21 mm.; antennae, male, 

 10.5 mm., female, 8.5 mm.; tegmiua, niale, 4 mm,, female, 4.5 mm.; 

 hind temora, male, 12.5 mm., female, 13 mm. 



Four males, 1) females. Arizona (U.S.N.]\I. — Riley collection; L. 

 Bruner) ; San Carlos, Gila County, Arizona, Wheeler s Ex}). (U.S.N.M. — 

 Riley collection); Fort Whipple, Yavapai Ccmnty, Arizona, E. Pal- 

 mer; Fort Buchanan, Pima County, Arizona, E. Palmer; Fort (iraut, 

 Graham County, Arizona (U.S.X.M. — Riley c(dle(;tion). 



See the remarks on this species under Melanoplus humphreijHit. e 

 sjiecimen from Ca])e St. Lucas which 1 referred ' to this species does 

 not belong to it, but i)robably to Melanoplus nitidus. 



10. INDIGENS SERIES. 



In this group, consisting of only a single species of medium size, the 

 prozona of the male is very longitudinal and the interspace between 

 the mesosternal lobes of the same sex only slightly longer than broad. 

 The antennae of the male are almost as long as the hind femora. The 

 tegmina are abbreviate, about as long as the pronotum, subelliptical 

 with rounded apex. The hind tibiae are greenish and have ten to 

 twelve spines in the outer series. 



The extremity of the male abdomen is hardly clavate and the supr;i 

 anal plate triangular with distinct median sulcus and mesially notched 

 lateral margins; the furcula consists of a small pair of tapering fingers: 

 the cerci are large and broad, almost equally broad throughout, and 

 ai)ically rounded, nearly straight; the subgenital i)late is broa^l and 

 short, the apical margin elevated to a blunt tubercle. 



The single species occurs in Idaho. 



iproc. Bost. Soc, Nat. Hist., XX, i>. 85. 



