274 vuo( EKinyas (tF nii: XATittXAi. MrsKVM. vouxx. 



hiph and rather plmqi walls: fiircula roTisistinp of a pair of minnte, dis- 

 tant denticniations; cere! inotlerately broad and stout iit base, j^radu 

 ally iiarrowinjjf to two-tliirds the width in tiie middle, beyond very 

 faintly enlar^fin*;. the tip rounded but slightly angulate, the whole sub 

 ereet, feebly incurved, and only ap'cally stronyly compressed, fully as 

 lonj; as the supraanal plate; subjrenital plate as broad as lon<r by the 

 considerable rounded elevation of the apical margin, which has a 

 scarcely ])erceptible tliickening, is entire, and, as seen from above, 

 regularly and strongly arcuate, with no lateral angles, the base of the 

 lateral margins rectangulale. slightly incurved. 



Length of body, male, 17mm.; antennae, 10 mm. ; tegmina, 9 mm. ; hind 

 femora, 10.75 mm. 



Two males. Crawford County, Iowa, July 13-24, J. A. Allen ; explor- 

 ations in Dakota under (leneral Sully, S. M. Kothhammer. 



This sjjecies is very closely related to Md.J'aHchii\is, but has an api 

 cally broader, less thickened, and regularly arcuate subgenital plate, 

 and slightly different cerci, these being considerably broader at base 

 than apically. It is named for my ornithological friend, Mr. J. A. Allen, 

 of the American Museum of Natural History, who many j-ears ago 

 obtained for me much of the material on which this memoir is based. 



80. MELANOPLUS SNOWII, new species. 



(Plate XVIII, tig. 7.) 



Of medium size, moderately stout, dark brownish fuscous. Head 

 not prominent, ])allid testaceous more or less begrimed with fuscous, 

 above almost wholly fuscous, separated by a pallid testaceous streak 

 from the broad piceous postocular band; vertex somewhat tumid, ele 

 vated slightly above the pronotum, the interspace between the eyes 

 nearly (male) or fully (female) half as broad again as the lirst anteunal 

 joint; fastigium gently declivent, broadly and in the female slightly 

 sulcate; frontal costa fading before the clypeus, equal, nearly (male) or 

 quite (female) as broad as the intersi)ace between tiie eyes, feebly sul- 

 cate at and brietly below the ocellus, punctate throughout; eyes uioder 

 ately large, moderately and in the two sexes e<iually prominent, but 

 little longer than the intraocular portion of the genae; antennae basally 

 ferruginous. Pronotum feebly and gradually enlarging from in front 

 posteriorly, the disk blackish fuscous with lateral stripes of pallid testa 

 ceous at least in the male, the lateral lobes testaceous or ferruginous, 

 with a very broad piceous postocular band contined to the prozona : 

 disk considerably convex, passing by a slight shoulder (better marked 

 in the female than in the male and forming feeble lateral carinae) iut<» 

 the tumid but inferiorh* vertical lateral lobes; median carina low but 

 tolerably distinct, equal, percurreut: front margin truncate, hind mar- 

 gin rotundato-obtusaugulate: prozona 'ongitudinal (male) or quadrate 

 (female), nearly a half (male) or about a fourth (female) longer than the 

 shallowly but closely punctate metazona. Prosternal spine stout and nut 



