384 NEW NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



The minimum extremes of size variation in the very large paratypic series 

 before us, from the Hudsonian Zone on Mount Hood, are amplified by the 

 presence of a few exceptionally small individuals, showing decided stunting, 

 probably a result of the severe conditions under which their development 

 had taken place. 



Head deep olive buff, a broad postocular bar on each side of dark blackish 

 olive, occiput and vertex olive brown. Antennae pecan brown, becoming 

 darker distad. Pronotum with disk olive brown, shading to natal brown 

 on metazona, lateral lobes with a shining band of bone brown dorsad which 

 is narrow proximad, about two-fifths as wide as the lateral lobe at principal 

 sulcus, caudad of this sulcus indicated by a dull suffusion of bone brown, 

 remaining portions of lateral lobes deep olive buff showing a few flecks of 

 brown. Tegmina bister with a few irregular blackish flecks, paling narrowly 

 along the sutural margin and at apex to buff. Dorsal surface of. abdomen 

 tawny olive microscopically flecked with darker and with large irregular 

 patches of blackish brown laterad on the proximal tergites. Ventral surface 

 chamois. Cephalic and median limbs clay color washed with grayish and 

 olivaceous. Caudal femora clay color with a grayish tinge, dorsal surface 

 with two weakly defined irregular bars of brown, external face with the 

 characteristic Melanoplid picturing defined in irregular areas of dark brown, 

 the carinae margining the external pagina flecked with brown, these markings 

 the more conspicuous on the ventral carina, which is of a paler buffy coloration; 

 ventral surface and all but dorsal portion of internal surface jasper red, this 

 sometimes confined to the internal half of the ventral surface. Caudal 

 tibiae jasper red with a proximo-internal dark marking; spines black, spurs 

 buffy, black tipped. 



In females the tegmina and dorsal surface of the abdomen usually show 

 numerous flecks of dark brown, while the latero-proximal dark areas on the 

 latter are often much broken. 



The general facies is distinctive, but plainly closer to that of washington- 

 ianus than to that of montanus. 



Specimens Examined: 232; 113 males, 118 females and 1 immature indi- 

 vidual. 



Oregon: Washington Gulch, foothills of Elkhorn Range, Blue Mountains, 

 3800 to 4300 feet, VIII, 14, 1910, (Rehn and Hebard), 8 cf, 3 9 . Cloud 

 Cap Turnaround, north slope of Mount Hood, 3290 feet, VIII, 20, 1910, 

 (Hebard), 1 9 . Cloud Cap Trail, Mount Hood, 6000 to 7000 feet, VIII, 

 18 to 20, 1910, (Rehn and Hebard), 104 d\ 113 9 , type, allotype and para- 

 types, 1 juv.; VIII, 18, 1916, (G. P. Englehardt), 1 d\ 1 9 . paratypes, [Heb- 

 ard .Ghi.]. 



In the Blue Mountains this insect was found scarce, one colony 

 being located on the steep pine-clad hillsides among scant under- 

 growth, in which Spiraea petufolia was predominant. 



On Mount Hood, in the Hudsonian Zone, the species was very 

 abundant on the open slopes covered with rich green grasses 



