318 rnoCEEDI y as OF THE NATIONAL Ml SEIM. vouxx. 



Sierra Nevada in central California, ami the last in central ^lexico. I 

 have also in my collection another species (No. .H51) from Mexico, allied 

 to one of the Texan species, but of whi<'h 1 know only the female, and 

 therefore tlo not describe. 



This series represents to a certain extent, in brachypterous forms, 

 the robustus series of macropterous species. 



loi. MELANOPLUS DUMICOLA. 



(Plate XXI, Hg. 7.) 



J'ezolittu- (himicoliis Sci7r>Di:Hl, Proc. Boat. 8o<-. Nat. Hist., XX (1879), i>]>.7«>-77; 

 (.Vnt. Orth. (1S79), pp. 65-66.— liRUNEH, Kep. V. S. Ent. Conim., ]II (1SS3), 

 p. 59. 



Of small size, smooth and glistening:. Head not prominent, the ver- 

 tex feebly tumid, scarcely elevated above the i)rouotum, the interspace 

 between the eyes very narrow, much less than (male) or scarcely equaling 

 (female)thewidthof the tirstantennal Joint; fastigium steeply declivent, 

 shallow, slender, siibspatulate with rather coarse bounding walls; 

 frontal costa moderate, e«iual except in being very slightly an<l roundly 

 contracted above, wider than the intersi)ace between the eyes, sulcate 

 at and below the ocellus, sparsely punctate; eyes rather large, rather 

 prominent especially in the male, very much longer than the intraocular 

 portion of the genae; antennae four- fifths (male) or two thirds (female) 

 as long as the hind femora. Pronotum very simple, uniforndy and very 

 slightly expanding i)osteriorly, the front border truncate or scarcely 

 convex, the hind border slightly and broadly mesially emarginate; lat- 

 eral carinae completely obsolete and uuiform, the disk passing insensibly 

 into the lateial lobes; median carina faint, very blunt, equal throughout: 

 prozona distinctly (female) or very (male) lougitudinal, sparsely and 

 rather faintly i)unctate, the metazona more distinctly and abundantly 

 but with minuter puncta. Prosternal spine rather small, erect, conical, 

 in the female a little apiiressed: interspace between mesosternal lobes 

 more than twice as long as broad (male) or (luadrate (female). Tegmiiin 

 lateral, minute, considerably shorter than the pronotum, bluntly 

 rounded apically, the inner margin nearly straight, the costal very con- 

 vex, the whole twice as long as broad. Fore and middle femora consid- 

 erably tumid in the male. Extremity of male abdomen considerably 

 clavate, strongly recurved, the supraanal plate triangular, a very little 

 longer than broad, the sides nearly straight, the extreme tip blunt; 

 furcula reduced to a pair of broad, lamellate, triangular teeth, their 

 angle projecting but little at the middle of either half of the sujuii 

 anal plate; cerci broad, compressed-laminate, subetpial but somewhat 

 and broadly constricted in the middle, straight and directed upward, 

 the apical half also incurved, the apex excised and produced a little 

 above; subgeuital phtte quadrate, tumid, the ai)ical margin semicircu- 



