148 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Length of body, male, 21 mm. 5 antennae, 9 mm.; tegmina, 16.5 mm.; 

 hind femora, 12 mm. 



Three males. Silver City, Grant County, Xew Mexico, (U.S.N.M. 

 Eiley collection) ; Fort Grant, Graham County, Arizona (same); and 

 Fort Whipple, Yavapai County, Arizona, Palmer. 



6. MELANOPLUS FLABELLIFER. 

 (Plate X, fig. 6.) 



Melanoplus flabellifer SCUDDKR!, Proc. Best. Soc. Nat. Hist., XX (1879), pp. 68-69; 

 Cent. Orth. (1879), pp. 57-58. BRUNER, Rep. U. S. Ent. Comm , III (1883), 

 p. 61; Bull. Waskb. Coll., I (1886), p. 200; Publ. Xebr. Acad. Sc., Ill (1893), 

 p. 28. 



Melanoplns occidentalis TOWXSEND!, Iiis. Life, VI (1893), p. 31. 



Of rather small size. Head scarcely elevated, well arched; inter- 

 space between the" eyes rather broader than the first joint of the 

 antennae, the fastigiuin faintly subspatulate, pretty deep, with abrupt 

 but blunt, rounded walls; frontal costa narrower than the interspace 

 between the eyes, slightly contracted above and very slightly ju>t 

 below the ocellus; otherwise scarcely enlarging from above downward, 

 scarcely depressed above the ocellus, strongly sulcate at and below the 

 same; eyes neither large nor very prominent; antennae pale castaneous, 

 paler, at base, about three-fourths (male) or less than two-thirds 

 (female) as long as the hind femora. Pronotuin rather simple, the 

 metazona expanding somewhat, the unequal halves of the prozoua each 

 slightly tumid laterally, and as a whole slightly expanding anteriorly; 

 front margin feebly sinuate, hind margin roundly obtusangulate; 

 median carina nearly obsolete between the sulci, but otherwise nearly 

 equal; transverse sulci of the prozona pretty distinct, the posterior 

 severing the median carina; metazona scarcely punctate ; prozona sub- 

 quadrate, slightly longer than the metazona, or, in the female, some- 

 times subequal. Prosternal spine short, stout, appressed conical, very 

 blunt tipped, hardly retrorse; interspace between the mesosternal 

 lobes subquadrate, a little longer than broad (male) or transverse 

 (female). Tegmina reaching (female) or slightly surpassing (male) the 

 tip of the hind femora, not very slender, subequal. Supraanal plate of 

 male triangular, bluntly pointed, the sides a little convex, rather longer 

 than broad; furcula formed of distinct, pointed, triangular teeth; cerci 

 large, flabellate, upturned, twice as long as the mean breadth, tapering 

 but little, the extremity broadly rounded ; subgeuital plate prow-shaped, 

 straight, ending in a blunt conical projection. 



The general color is ciuereo-plumbeous, the head and pronotum dusky 

 above, with the usual black belt behind the eye, extending over the 

 prozona. Tegmina dark fuscous, especially at base, sprinkled with 

 dusky spots; wings hyaline, sometimes with a feeble bluish tinge, the 

 anterior venation dusky. Hind femora livid brown on the outer face, 

 heavily marked with rufo-fuscous in oblique bands, orange beneath; 



