266 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



76. MELANOPLUS JUVENCUS, new species. 

 (Plate XVIII, fig. 1.) 



Pezotettix puer SCUDDER! (pars), Proc. Bost. Soc. Nat. Hist., XIX (1877), p. 87; 

 (pars), Ent. Notes, VI (1878), p. 28. 



Brownish fuscous with a ferruginous tinge. Head not prominent^ 

 luteo-testaceous with an olivaceous tinge, flecked feebly with fuscous, 

 above deeply infuscated ; vertex feebly tumid, scarcely raised above the 

 level of the pronoturn, the interspace between the eyes no wider than 

 the first antennal joint; fastigium steeply declivent, sulcate throughout; 

 frontal costa narrow, no wider than the interspace between the eyes, 

 equal, percurrent, distinctly sulcate excepting above, punctate; eyes 

 large, prominent, much longer than the infraocular portion of the genae; 

 antennae dull luteous at base, growing rufescent beyond, apically iiifus- 

 cated, about three-fifths as long as the hind femora. Pronotum sub- 

 equal, the disk nearly plane but very broadly tectate, passing by an 

 abrupt angle, forming a distinct lateral carina, into the slightly tumid, 

 sub vertical lateral lobes, which are marked above on the prozona by an 

 exceptionally broad piceous belt, broader on the anterior than on the 

 posterior section ; median cariua equally distinct throughout; front and 

 hind margins truncate, the latter feebly emargiuate in the middle; 

 prozoua longitudinal, very sparsely punctate, almost twice as long as 

 the finely but obscurely ruguloso-punctate metazoua. Prosternal spine 

 short, lobate, appressed, very blunt, suberect; interspace between 

 rnesosternal lobes a little longer than broad, the metasternal lobes 

 approximate. Tegmina obovate, well rounded, twice as long as broad, 

 longer than the head and pronotum together, attiugent, uniform dark 

 castaneous. Fore femora feebly tumescent; hind femora rufo luteous, 

 olivaceous on the outer face, rather broadly and transversely bifasciate 

 with fuscous, the whole geniculation blackish; hind tibiae pale, rather 

 dingy greenish, with a lutescent basal aunulus, the spines black almost 

 or quite to the base, ten in number in the outer series. Extremity of 

 male abdomen slightly clavate, a little upturned, the supraanal plate 

 rather long triangular, the lateral margins slightly elevated, a pair of 

 short, distant, apical ridges, and the median sulcus rather deep and 

 conspicuous between sharp and rather high walls extending beyond 

 the middle of the plate; furcula consisting of a pair of slight denticu. 

 latious overlying the bases of the submedian ridges of the supraaual 

 plate; cerci long and rather slender, tapering in the basal third only, 

 beyond equal nearly to the tip, which is rounded but unequally curved, 

 forming a blunt angle inferiorly, the whole fully four times as long as 

 the median breadth, yet scarcely surpassing the tip of the supra-anal 

 plate, gently incurved apically, the whole lower margin straight; sub- 

 genital plate small, considerably longer than broad, broader at base 

 than at apex, the apical margin neither elevated nor prolonged, well 

 rounded but feebly angulate, entire. 



