164 PROCEEDINGS OF THE NATIONAL MUSEUM. 



constricted; furcula consisting of a pair of rather distant, minute, 

 slender denticulations, lying outside the ridges bounding the sulcus of 

 the supraanal plate; cerci coarse, punctate, hardly tapering, slightly 

 upcurved, hardly twice as long as broad, the upper apical portion 

 strongly compressed, while the rest is rather tumid, the apex rounded, 

 reaching beyond the supraanal plate; subgenital plate broad and 

 short, neither elevated nor prolonged apically, the apical margin nar- 

 rowly subtruncate. 



Length of body, male, 15 mm., female, 22.5 mm.; antennae, male, 6.5 

 mm., female, 6 mm.; tegmina, male, 11 mm., female, 13 mm.; hind 

 femora, male, 8 mm., female, 10.5 mm. 



Three males, 2 females. Yukon Kiver, Alaska, Kenuicott; Souris 

 liiver, Assiniboia, Dawson; Glendive, Dawson County, Montana (L. 

 Bruner); Ouster County, Montana (same). 



Bruuer states that this insect feeds upon sagebrush, though it is 

 uncertain whether this is the species he refers to in his statement, since 

 the specimens received from him bear another name. 



5. IJTAHENSIS SERIES. 



In this small group the prozoua of the male is quadrate or subquad- 

 rate, and the interspace between the mesosterual lobes is as in the 

 spretus series; in front of these lobes, also, the mesosternurn of the 

 male has a central swelling forming a blunt tubercle. The antennae 

 are rather short and differ but little in the two sexes. The tegmina 

 are fully developed, but rather short, surpassing the hind femora but 

 little if at all, and clear or feebly maculate; the hind tibiae are red, 

 with normally eleven spines in the outer series. 



The supraaual plate is rudely clypeate and longer than broad; the 

 furcula well developed, consisting of flattened, parallel, more or less 

 tapering fingers, half as long as the supraanal plate; the cerci are 

 laminate and simple, very broad and short, subequal, broadly rounded 

 apically, a little upcurved; the subgenital plate is peculiar, being* 

 exceptionally long and exceptionally broad, exceptionally elevated 

 and prolonged at apex, the apical margin strongly rounded and 

 mesially entire, though in one species laterally notched, an exceedingly 

 exceptional feature. 



The species, three in number, vary from a little below the medium 

 to rather large sized. They are found mainly in the Cordilleran region 

 from about latitude 38 northward into Canada. 



18. MELANOPLUS BRUNERI, new species. 



(Plate XI, fig. 7.) 

 Melanopli(8 extremus? BRUNEK!, Cau. Ent. ; XVII (1885), p. 18. 



Brownish fuscous, often with a ferruginous tint. Head pale olivaceo- 

 testaceous, dark fuscous or ferruginous above, often much infumated or 

 mottled with fuscous below aiid with a piceous stripe behind the eyes; 

 vertex feebly tumid, scarcely raised above the level of the pronotuin ; 



