JIO.I124. llET'ISIfty OF THE MELASnPLI-SCnntEU. •iT.'i 



latter are rather short, and tlie liiiul til)iae either red or ijhuicous, with 

 nine to eleven s])ines in the outer series. 



The supraanal plate is triaiifrular, with raised niar«4:ins: the fiinula 

 consists of a pair of slight and distant or very distant jH-ojeetions; thei 

 eerei are stout and heavy, two or three times as lonj;' as broad, uieNJally 

 contracted and apically anguhite; tiie subjienital plate is broad, 

 broader than lony- by the greater or less elevation of the entire an«l 

 well-rounded api<'al margin. 



There are but two sjiecies known, of medium size, one from Xew 

 -Mexico and the other from Iowa and Dakota. 



79. MELANOPLUS ALLENI, new species. 



(Plate XVIII. rig. 6.) 



Of medium size, blackish fuscous, with a ferruginous tinge. J lead 

 not prominent, ferrugineo-testaceous more or less infuscated, above with 

 a broad, enlarging, median, fuscous stripe, and a broad piceous postoc- 

 ular band; vertex rather tumid, a little elevated above the pronotum, 

 the interspace between the eyes fully half as broad again as the tiisc 

 antennaljoint; fastigium rapidly declivent, verj' feebly and very broadly 

 snicate; frontal costa percurrent, subequal, a little narrower above, 

 about as broad as the interspace between the eyes, feebly sulcate at 

 and below the ocellus, biseriately punctate above; eyes rather large 

 and prominent, much longer than the infraocular poition of the genae; 

 antennae ferruginous, almost as long as the hind femora. Pronotum 

 subequal but slightly enlarging on the metazona, with a broad piceous 

 postocular band confined to the prozona, but sometimes appearing very 

 faintly on the metazoim, the disk broadly convex and passing by a 

 rounded shoulder nowhere forming lateral cariuae into the anteriorly 

 faintly tumid vertical lateral lobes; median carina distinct on the 

 metazona, subobsolete or obsolete on the prozona; front margin trun- 

 cate, hind margin very obtusaiigulate; prozona longitudinally sub- 

 quadrate, about a third longer than the densely and finely punctate 

 metazona. Prosternal spine short, stout, conical : interspace between 

 iiiesostemal lobes sliglitly longer than broad. Tegmina moderately 

 abbreviate, reaching a little beyond the middle of the hind femora, 

 moderately broad at base, tapering distinctly and pretty uniforndy to 

 a strongly roundetl tip, ferrugineo fuscous. Fore and middle femora 

 considerably tumid in the male; hind femora moderately short but not 

 very stout, Havo- testaceous, obliquely bifasciate with fuscous, the under 

 surlace i)ale carmine, the v^-hole geniculation fuscous; hind tibiae pale 

 red, infuscated at base with a pala aunulus beyond, the spines black 

 Iteyond their base, ten to eleven in number in the outer series. Ex- 

 tremity of male c^odomen clavate, strongly recurved, the supraanal plate 

 triangular, with acutangulate apex, feebly and narrowly compressed 

 luesially, with a transverse median plica, tho margins broadly and cori- 

 >iderably elevated, the median sulcus ])ercurrent between moderately 

 Pioc. N. M. vol. XX 18 



