384 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



Size and form medium. Vertex slightly narrower than in 

 oreophilus, surface shallowly depressed between the distinct 

 lateral carinae; frontal costa weakly depressed in vicinity of 

 median ocellus. Eye proportionately slightly smaller than in 

 oreophilus, nearly one and one-half times as long as infra-ocular 

 sulcus. Pronotum much as in that species and washingtonius, 

 disk more clearly separable from lateral lobes than in montanus 

 particularly caudad; medio-longitudinal carina weakonmetazona, 

 weak on prozona and obsolete between the sulci there; transverse 

 sulci weak; caudal margin of disk weakly obtuse-angulate pro- 

 duced with angle broadly rounded. Prosternal spine rather 

 sharply conical. Tegmina as in oreophilus and washingtonius, 

 slightly longer than pronotum, subattingent (but slightly over- 

 lapping in great majority of series), lanceolate pads. Furcula 

 represented by two small stout processes springing from con- 

 vexities of the tergite, the projecting portions about twice as long 

 as broad with apices rounded. Supra-anal plate triangularly 

 shield-shaped, medio-longitudinal sulcus deep only in proximal 

 two-fifths, disto-lateral short carinae very feeble and parallel. 

 Cercus distinctly over three times as long as proximal width, 

 simple, slightly curved dorsad, distad subspatulate with slight 

 and irregular impression indicated on external surface of that 

 area. Penis distinctive as figured, the outer processes curving 

 almost to meet dorso-mesad but not at all hooding the inner 

 processes as is the case in oreophilus (see plate XXVI, figure 10), 

 the inner processes with minute apices curled inward and caudad 

 of these two slender erect straight sharp processes reach almost 

 as far dorsad as the inner processes. Subgenital plate apically 

 rather sharply rounded, so that it might be said to terminate in a 

 tubercle, this not elevated above the lateral margins (and in some 

 males distinctly transverse). 



Allotype. — 9 ; same data as type. [Hebard Collection]. 



Agrees with type except as follows. Size much larger, form 

 much more robust. Vertex broader. Eye deeper. Prosternal 

 spine heavier conical, with apex sharply rounded. Ovipositor 

 valves moderately elongate, with distal curvature decided. 



Generally dull brown; face, genae and lateral lobes of pronotum 

 paler, brownish buff. Postocular bar moderately wide, not very 

 strikingly defined, dark brown, with a fleck or short oblique bar 

 of brownish-buff dorso-cephalad on pronotal lateral lobes (this 

 is normally obsolete in washingtonius, usually weakly indicated 

 in oreophilus), this more conspicuous in females. Occiput, disk 

 of pronotum and tegmina brown, the latter sometimes slightly 

 mottled with darker brown, occasionally with lateral portions 



