308 VIHH h.EDISiiS ftp THE y.iTKtS.ll. MISEIW. voi.xx. 



ajxes juhI in t!io tt'j^inlna, besides some (listiiicfion \n the jjeiieral 

 I'olonitioii. 



The specitiiens from (rraml .Iimetioii, Colorado, mentioned above aa in 

 Hi nn«'i"sco!le<'tion, are short \vin;;edand iiKlicateo«-ea.sion;il dimorphism 

 ill tlii>i species. 



127. MELANOPLUS THOMASI, new species. 

 (Plate XXV. fij;. 1.) 

 }/rluiioitliiM thoniuni I»l{l*N'EIt I, MS. ^ 



hark phimhro olivaeeoiia, thr ab(h)m«Mi (hirk t'erruj;inous. Head 

 marked with llavo-testacfous beh>\v and on the inner side of the eyes 

 above, alK>vr the* antJMinal sciobes, alon^' the lateral edfjes of the fron- 

 tal ('osta,and in a br<»ad stripe behind the ui>per i>art <d' the eyes, which 

 passes backward; vertex gently tumid; interspace between the eyes 

 searcelv narrower tiian tlie frontal costa, tlu' lastijiium broadly and 

 rather shall) iwly sulcate in front, the fiontal costa broad, eijual, deli- 

 eately punctate, shallowly sulcate at and below the ocellus; eyes mod- 

 erately larj;**, not very prominent, about as lonjj; as the intraocular 

 portion of the «,^enae; antennae reddish becominj^ infuscated apically. 

 a little shorter imalei than tiie hind femora. Pronotum subtM|ual, 

 enl;ir^^iii.u a \ (*r.\ little posteriorly, the fnmt margin nearly truncate, 

 the hind margin very broadly anj^ulate, the disk nearly i>lane, separated 

 by subdistinct but rounded lateral carina<' from the sub\ertic.d, slightly 

 tuiid '. lateral loi»es, the median carina distinct on tli" metazona, very 

 feeble on the prozona, the smooth prozona considerably and roundly 

 emarginate in the nn<Mle half l)ehind, distinctly longitudinal, nearly ;» 

 half longer than the (dosely but shallowly i)unctate metazona, with a 

 n»oderately broad, equal, Havo-testaceous stripe on either side of the 

 (iisk of the wlnde i>ronotum, limited by the lateral caiinae. the lateral 

 lobes nearly unifoini dark i)Iumbeo-olivaceoas, but deeper in C(dor above 

 than below. Prosternal spine stout, rather long, cylindrical, blunt, 

 enlarging slightly on apical half as seen from the front. Tegnuna not 

 reaching the tip of the femora, testaceous with dark veins, a tlavo- 

 testaceous stripe tbllowing the anal vein; wings pellucid, the veins tes 

 taceous or fusco testaceous, colorless in the lower half of the anal area. 

 Feiiu)ra dark plumbeo olivaceous, the hind pair tinged above with fer 

 rnginous, the lower half of the outer side tlavous, the inner and lower 

 face coralline, with a faint i)regemcular tlavous annulus more or less 

 complete, ])receded on the inner side above by a fuscous patch, the 

 genicular arc plumbeo fuscous; hind tibiae wholly coral red, the s[)ines 

 black at the base, eleven in number in the outer series. Kxtremity of 

 male abdomen somewhat clavate, rounded, a little iii)turned, the supra 

 anal i»late broad and triangular with sinuate lateral margins, re tan- 

 gnlate apex, nearly plane, but with a rather broad and shallow median 

 longiiudinal sulcus in the basal half, bordered bv rather low walls, and 

 a pair of apical, distant and subparallel, short, gently arcuate, slight 



