IGO riiOCKKDIXGS or the national museum. vol xx. 



McNeill found it in Illinois only on liifjli sandy fjronnd where the 

 sole vegetation was Centhius, and the giasshoi)i)ers were ''colored so 

 nearly like the yellow sand that tliey were dillieult to see when only 

 two or three feet away." 



A sinj^le si)eeimen from Colorado which ai»i)areiitly belongs here, but 

 is too much injnre<l to determine with certainty, has the hind tibiae 

 pale red. 



15. MELANOPLUS ELONGATUS. new : pecies. 

 (Plate \ I. tig. 5.) 



Long and slender bodied, warm brownish fuscous, sometimes more or 

 less ferruginous, with feeble markings. Head slightly i)rominent, dull 

 ])lumbeo-tlavous, much obscured with fuscous, especially above and in 

 a band behind the eyes; vertex gently tumid, the interspace between 

 the eyes rather narrow, narrower than (male) or rather broad, broader 

 than (female) the frontal costa; fastigium descending with tolerable 

 rapiility, broa<lly and deeply (male) or shallowly (female) sulcate 

 throughout; frontal costa moderately broad, eipml, deejdy sulcate 

 excei)ting above, where it is seriately i)unctate next the margins; eyes 

 tolerably large, not very pnuninent, rather elongate; antennae slightly 

 shorter than (male) or about two thirds as long as (femah) the hind 

 femora, fuivo-luteous, infuscated apically. rronotuin gently enlarging 

 posteriorly, the fnmt margin subtruncate, the hind margin somewhat 

 obtusely angulate, the angle well rcmnded, the disk nearly i)lane, pass- 

 ing by a rounded angle into the inferiorly vertical lateral lobes, the 

 median carina distinct though slight on the nietazona, feebly- percepti- 

 ble on the prozona; lateral lobes marked above more or less obscurely 

 with a broad fuRccms stripe crossing the prozona, immediately below it 

 sometimes enlivened with paler flecks; prozona feebly longitudinal 

 (male) or feebl}' transverse (female), but little longer than the closely 

 and finely punctate metazona. Prosternal spine long, erect, conico 

 cylindrical, blunt tii)ped; interspace between mesosternal lobes several 

 times longer than broad, especially in the male, the metasternal lobes 

 attingent in part (male) or approximate (female). Tegmina very long 

 and slender, scarcely tapering, well rounded apically, feebly and very 

 minutely flecked, extending far beyond the femor-'l tips; wings ample, 

 pellucid, the veins and cross- veins blackish fuscous. Femora ferrugineo 

 testaceous, the hind pair more or less and irregularly clouded with fiis 

 cous, sometimes making a feeble, indistinct bifasciate barring, the 

 genicular arc blackish testaceous : hind tibiae feebly incurved, glaucous, 

 apically lutescent, pallid along the line of the spines, which are i)alli<l 

 at base, black apically, and nine to eleven, usually ten, in number in 

 the outer series. Extremity of male abdomen a little clavate, upturned, 

 the su])raanal plate subclyi>eate, with well rounded but feebly sinuate 

 lateral margins, which are broadly and feebly raised, and hardly the 

 least sign of a median sulcus; furcula consisting of a pair of large, very 

 broad, much depressed, parallel plates, attingent at base, taperinu 

 and bluntly rounded at tip, reaching-the middle of the supraanal [)latc. 



