204 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



The supraanal plate is regularly triangular with straight sides and 

 acutangulate apex, the surface entirely in the same plane from base to 

 apex, i. e.,with no apical depression. The furcula in the single known 

 species is reduced to a pair of very slight rather distant spines, no 

 longer than the last dorsal segment. The cerci taper considerably at 

 base, but more by excision of the lower than of the upper margin, and 

 beyond the middle are subequal, hardly in the least incurved, and api- 

 cally angulate. The subgenital plate is of equal breadth throughout 

 and terminates in a postmarginal blunt tubercle above, the apical mar- 

 gin being abbreviated, rounded, and entire. 



The single species occurs in the Southern States, east of the Missis- 

 sippi. 



36. MELANOPLUS IMPUDICUS, new species. 



(Plate XIV, tig. 1.) 



Of medium size, brownish fuscous, with a decided ferruginous tinge. 

 Head moderately prominent, testaceous or ferrugineo-testaceous, dotted 

 above with fuscous, the dots mesially forming a stripe, and with a dis- 

 tinct postocular piceous band; vertex rather tumid, distinctly elevated 

 above the pronotum, the interspace between the eyes as broad (male) 

 or fully half as broad again (female) as the first antennal joint; fas- 

 tigium steeply declivent, feebly (male) or very feebly (female) sulcate; 

 face more than usually retreating, the frontal costa failing to reach the 

 clypeus, equal, as broad (male) or almost as broad (female) as the inter- 

 space between the eyes, sulcate excepting above where it is biseriately 

 punctate; eyes not very prominent, rather large, distinctly longer than 

 the infraocular portion of the genae; antennae ferruginous, less than 

 two-thirds (male) or about three-fifths (female) as long as the hind 

 femora. Pronotum subequal, expanding a little on the metazona, the 

 disk ferrugineo-luteous necked with fuscous, very feebly convex, pass- 

 ing by a rounded shoulder nowhere forming lateral carinae into the 

 anteriorly tumid vertical lateral lobes, which are of the color of the 

 face, with a broad piceous postocular stripe across the prozona; median 

 carina distinct on the metazona, feeble and in the female subobsolete 

 on the prozona; front margin truncate; hind margin obtusangulate; 

 prozona feebly longitudinal (male) or distinctly transverse (female), a 

 little (male) or no (female) longer than the delicately punctate meta- 

 zona. Prosternal spine rather long (male) or rather short (female), 

 conical, rather blunt, suberect; interspace between mesosternal lobes 

 nearly half as long again as broad in both sexes, the inetasternal 

 lobes approximate (male) or somewhat approximate (female). Tegmina 

 surpassing a little (male) or considerably (female) the hind femora, 

 moderately broad, tapering (more rapidly in the male than in the female), 

 brownish fuscous, the discoidal area lighter at least on the basal half, 

 and necked throughout with tolerably large, more or less rounded, dark 

 fuscous spots ; wings rather broad, hyaline at base, beyond infumated 



