192 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



29. MELANOPLUS CONSANGUINEUS, new species. 

 (Plate XII, fig. 10.) 



)\ Dark ferrugiueo-fuscous. Head slightly prominent, very dark tes- 

 taceous, heavily infuscated above and sometimes flecked with fuscous 

 on face and geuae, a piceous band behind the eyes; vertex rather 

 tumid, well raised above the pronotum, the interspace between the 

 (yes rather narrow, about as wide as (male) or a little wider than 

 (female) the first antenna! joint; fastigium steeply declivent, broadly 

 and rather deeply sulcate; frontal costa equal (female) or narrowed 

 above (male), at its broadest considerably (male) or somewhat (female) 

 broader than the interspace between the eyes, fading below, slightly 

 sulcate at and below the ocellus, sedately punctate on the sides; eyes 

 as in M. diminutus; antennae dark castaneous, less than two-thirds as 

 long as the hind femora, of about equal relative length in the two sexes. 

 Pronotum subequal, enlarging a little on the metazona and feebly in 

 front; front margin truncate, hind margin obtusangulate, the lateral 

 lobes with a broad piceous belt across the prozona above, below which 

 they are lighter than the disk; median cariua distinct on the metazoua, 

 feeble on the prozona, and nearly obsolete between the sulci; lateral 

 carinae marked only by a rounded shoulder more distinct on the meta- 

 zoua than on the prozona; prozona subquadrate, scarcely longer than 

 the finely and not sharply punctate metazona, Prosternal spine erect 

 and rather long, conieo-cylindrieal (male) or rather short, appressed 

 conical (female); interspace between mesosternal lobes about half as 

 long again as broad (male), or only a little longer than broad (female). 

 Tegmina nearly reaching (male) or slightly surpassing (female) the tip 

 of the hind femora, rather slender, tapering, strongly rounded apically 

 dark fuscous with tolerably distinct maculation in the discoidal area; 

 wings not very broad, hyaline, with glauco-fuscous veins. Hind femora 

 dull testaceous, marked as in Jlf. diminutus, the hind tibiae glaucous, 

 the spines pallid at base, black at tip, ten to eleven in number in the 

 outer series. Extremity of male abdomen clavate, well upturned, the 

 supraanal plate triangular, the lateral margins broadly elevated and 

 at base well rounded, the median sulcus narrow and, except apically, 

 deep, its bounding walls rather high and abrupt; furcuhi consisting of 

 a pair of depressed, rather slender, tapering, acuminate, slightly 

 divergent fingers, falling somewhat short of the middle of the supraanal 

 plate; cerci small and slender, about four times as long as broad, nearly 

 straight but gently incurved throughout, broadly rounded apically? 

 subequal but tapering slightly on basal half, the apical third deeply 

 sulcate exteriorly, the whole considerably shorter than the supraanal 

 plate; subgenital plate moderately broad and short, the lateral margins 

 somewhat abruptly and moderately elevated apically, but not pro. 

 longed posteriorly, the apical margin narrowly subtruncate and feebly 

 emarginate. 



