224 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



very simple, being slightly incurved, but otherwise straight and sub- 

 equal laminae, a little more than three times as long as broad, tapering 

 feebly for a short distance from the base and apically expanding in the 

 slightest degree, the apical margin broadly rounded; subgenital plate 

 a little longer than broad, a little prolonged and slightly elevated 

 apically, the apical margin angulate, but rounded and entire. 



Length of body, male, 17 mm., female, 22 mm. ;' antennae, male, 7 mm., 

 female, 7.5 mm.; tegmina, male, 3.5 mm., female, 4 mm.; hind femora, 

 male, 10 mm., female, 12 mm. 



Three males; 8 females. Mount Alvarez, San Luis Potosi, Mexico, 

 E. Palmer. 



48. MELANOPLUS MILITARIS, new species. 

 (Plate XV, fig. 3.) 



Blackish fuscous above with some ferruginous tints, pallid below. 

 Head not prominent or feebly so in the male, blackish fuscous above, 

 sometimes heavily irrorate with testaceous, the rest, except a rather 

 narrow postocular piceous band, very pallid plumbeous, sometimes with 

 a pinkish hue, the genae more or less necked with fuscous posteriorly; 

 vertex gently tumid, distinctly elevated above the pronotum, the inter- 

 space between the eyes rather broad, nearly or quite twice as broad as 

 the first antenna! joint, similar in the two sexes; fastigiurn rapidly 

 declivent, shallowly sulcate; frontal costa only moderately broad, as 

 broad as (female) or slightly narrower than (male) the interspace between 

 the eyes, subequal, just failing to reach the clypeus, slightly sulcate 

 at and below the ocellus, rather feebly punctate; eyes not very large, 

 rather prominent in the male, rather shorter than the intraocular por- 

 tion of the genae; antennae fusco-luteous or fusco-ferrugiuous, more 

 than three-fourths (male) or less than three-fifths (female) as long as the 

 hind femora. Pronotum dull testaceous, very heavily sprinkled with 

 blackish fuscous above, especially on the prozona, sometimes so as to 

 become almost wholly blackish fuscous, the metazona ferruginous, the 

 upper half of the lateral lobes with a sometimes broken, broad, piceous 

 band, which fades partially or completely on the metazona, the whole 

 prouotum short, equal on the prozona, enlarging gradually and slightly 

 on the metazona, the disk very broadly convex and passing almost 

 insensibly but with a very broadly rounded angle into the vertical 

 (male) or subvertical (female) lateral lobes; front margin truncate, hind 

 margin broadly convex with a feeble angulation in the male; median 

 carina feeble on the metazona, subobsolete on the prozona; transverse 

 sulci of the prozona tolerably distinct, percurrent; prozona quadrate, 

 about a fourth longer than the obscurely punctate metazona. Pro- 

 sternal spine short, stout, very blunt, conical, erect, in the female a little 

 appressed; interspace between mesosternal lobes nearly twice as long 

 as broad (male) or strongly transverse, nearly as broad as the lobes 



