NO. 1124. 



or THE MEL AXOPLTSC UDDER. 71 



plate moderately prominent, erect, somewhat sharply conical as seen 

 from behind. 



Length of body, male, 13.5 mm.; antennae, 0.5 mm.; tegmina, 11.25 

 mm.: hind femora, 8.5 mm. 



One male. Fort Grant, Graham County, Arizona ( U.S.N.M. [No. 13]). 



2. AEOLOPLUS ELEGANS, new species. 

 (Plate V, fig. 6.) 



Head pale greenish yellow, the vertex deeper yellow, with a medio- 

 dorsal pale bluish green stripe from the front of the fastigium back- 

 ward; antennae pale salmon, pallid at base and fnscesceut at tip; 

 fastigium broadly and very shallowly sulcate throughout; frontal costa 

 rather broader than the interspace between the eyes, equal, faintly 

 sulcate below the ocellus. Pronotum very pale testaceous with a slight 

 greenish tinge, more pronounced on the metazona, with a very broad 

 pale bluish green mediodorsal stripe inclosing one of pale testaceous, 

 and with some greenish clouds upon the lateral lobes of the prozona; 

 posterior margin very obtusely angulate, the angle rounded; prozona 

 feebly transverse with no median carina. Prosternal spine short, con- 

 ical, erect. Tegmina considerably surpassing the abdomen, exception- 

 ally slender for the genus, with scarcely any subbasal expansion of the 

 costal area, tapering very gradually, the apex well rounded, subpel- 

 lucid with greenish yellow veins; wings not much shorter than the 

 tegmina, fully twice as long as broad, the veins greenish, faintly infus- 

 cated. Hind femora dull luteous, with three transverse fusco-olivaceous 

 stripes, more or less confluent on the outer face; hind tibiae pale 

 glaucous, the spines paler glaucous with black tips. Supraanal plate 

 of male somewhat distorted in the only specimen seen, but apparently 

 triangular, with slight median emargination of the sides and a shallow 

 basal sulcus, bounded by convergent walls; furcula practically absent; 

 cerci rather stout, tapering on the basal half, equal and hardly less than 

 half as wide as the base on the apical half, the tip rounded and very 

 feebly decurved ; subapical tubercle of subgenital plate rather promi- 

 nent, large, very bluntly conical. 



Length of body (contracted), male, 18 mm.; antennae, 9 mm.; teg- 

 mina, 17.5 mm.; hind femora, 11 mm. 



One male. Las Cruces, Donna Ana County, New Mexico, August 8, 

 T. D. A. Cockerell (IJ.S.N.M. [No. 714]). 



3. AEOLOPLUS REGALIS. 



(Plate V, fig. 7.) 

 Caloptenua regalis DODGE, Can. Ent., VIII (1876), pp. 11-12. BRUXER, ibid., IX 



, p. 145. THOMAS, Rep. U. S. Ent. Comm., I (1878), p. 43. BRUXER, 

 ibid., Ill (1883), p. 60. 

 Melanoplus ref/aUs BRUXER, Pnbl. Xebr. Acatl. Sc., Ill (1893), p. 28. 



Head yellow, more or less deeply tinged with testaceous, marked 

 with a dark bluish green median stripe extending from the front of 



