230 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



clavate, upturned, the supraaual plate rather long triangular, with 

 tolerably straight sides, slightly and broadly elevated in the basal half, 

 acutangulate apex, the whole apical half at a slightly lower plane than 

 the basal, the median sulcus rather broad and distinct, with rather 

 sharp walls, terminating with the upper shelf; furcula consisting of a 

 pair of slight, distant, slender denticulations, lying outside the ridges 

 of the supraanal plate, much shorter than the last dorsal segment; 

 cerci subequal, punctate, compressed laminae, about four times as long 

 as broad, feebly and broadly constricted rnesially, the apical portion 

 scarcely so broad as the base, and gently incurved, somewhat sulcate, 

 the tip well rounded but subangulate inferiorly, reaching the tip of the 

 supraanal plate; subgenital plate small, a little broader at base than 

 at apex, feebly compressed apically and faintly elevated, the apical 

 margin well rounded, entire. 



Length of body, male, 20 mm., female, 23 mm.; antennae, male and 

 female, 9 mm. ; tegmina, male and female, 16 mm. ; hind femora, male, 

 12 mm., female, 13.25 mm. 



Eighteen males, 9 females. Medicine Hat, Assiniboia, September, 

 (U.S.N.M. Riley collection : L. Bruuer); Montana (L.Bruner); Gordon, 

 Sheridan County, Nebraska (U.S.N.M. Eiley collection); Fort Robin- 

 son, Dawes County, Nebraska, August 21, L. Bruuer (same); Custer 

 County, Colorado, T. D. A. Cockerell (same). 



Colorado and Nebraska specimens appear to have the male cerci 

 slightly broader apically than those from farther north and may prove 

 distinct. 



52. MELANOPLUS PALMERI, new species. 

 (Plate XV, fig. 7.) 



Grayish or brownish fuscous, darker above than below. Head not 

 prominent, testaceous, sometimes ferrugineo-testaceous, more or less 

 flecked with fuscous, which prevails above and appears in a broad post- 

 ocular band; vertex gently tumid, slightly elevated above the prono- 

 tum, the interspace between the eyes rather broad, much broader than 

 (male) or twice as broad as (female) the basal antennal joint; fastigiuui 

 steeply declivent, sulcate throughout; frontal costa rather prominent, 

 equal, as broad as the interspace between the eyes, percurrent, sulcate 

 at and below the ocellus, feebly punctate; eyes rather large, moderately 

 prominent in the male, distinctly longer than the infraocular portion of 

 thegeuae; antennae luteous or luteo testaceous, about four-fifths (male) 

 or two-thirds (female) as long as the hind femora. Pronotum subequal, 

 enlarging a very little posteriorly, the lower half of the lateral lobes 

 cleaner and brighter in color than the rest, the prozona with a more or 

 less distinct but sometimes nearly obsolete postocular blackish fuscous 

 band; disk passing by a well-rounded angle into the vertical lateral 

 lobes, the median carina distinct on the metazona only, almost wholly 

 obsolete on the prozona; front margin truncate, hind margin feebly 



