274 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



high and rather sharp walls; furcula consisting of a pair of minute, dis- 

 tant denticulations ; cerci moderately broad and stout at base, gradu- 

 ally narrowing to two-thirds the width in the middle, beyond very 

 faintly enlarging, the tip rounded but slightly augulate, the whole sub 

 erect, feebly incurved, and only apically strongly compressed, fully as 

 long as the supraanal plate; subgenital plate as broad as long by the 

 considerable rounded elevation of the apical margin, which has a 

 scarcely perceptible thickening, is entire, and, as seen from above, 

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

 lateral margins rectangulate, slightly incurved. 



Length of body, male, 17nim.; 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 General Sully, S. M. Eothhaminer. 



This species is very closely related to Mel. fasciatiiSj 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 years ago 

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



80. MELANOPLUS SNOWII, new species. 



(Plate XVIII, fig. 7.) 



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

 not prominent, pallid testaceous more or less begrimed with fuscous, 

 above almost wholly fuscous, separated by a pallid testaceous streak 

 from the broad piceous postoeular 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 first antenna! 

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

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

 quite (female) as broad as the interspace between the eyes, feebly sul- 

 cate at and briefly below the ocellus, punctate throughout; eyes moder- 

 ately large, moderately and in the two sexes equally prominent, but 

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

 ferruginous. Prouotum 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 confined to the prozona; 

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

 in the female than in the male and forming feeble lateral cariuae) into 

 the tumid but inferiorly vertical lateral lobes ; median cariua low but 

 tolerably distinct, equal, percurrent; front margin truncate, hind mar- 

 gin rotundato-obtusangulate; prozona longitudinal (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 not 



