70 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



A 2 . Pronotum, tegmina (usually), and lower genicular lobe of hind femora unicol- 

 orous, unstriped. 



6 1 . Inferior base of hind femora of male with no depending tooth. 



8. uniformii (p. 77). 



6 2 . Inferior base of hind femora of male with a distinct depending tooth. 



c l . Eyes of male moderately prominent, as seen from above less than half as high 



as long 9. arizonensis (p. 78). 



e-. Eyes of male very prominent, as seen from above fully half as high as 

 long 10. oculatus (p. 79). 



i. AEOLOPLUS TENUIPENNIS, new species. 

 (Plate V, fig. 5.)- 



Head pallid fuscous, flecked on the sides with brown and with a 

 mediodorsal blackish brown stripe, which fills the narrow sulcus of the 

 fastigiuin and passes backward much broadened, continuing with less 

 depth of color but with equal width upon the pronotum, as far as the 

 posterior limit of the prozoua; a similar but weaker brown stripe 

 passes from behind the eye a similar distance, broader and weaker 

 upon the pronotum; antennae pale salmon red, paler at base; frontal 

 costa equal, as wide as or slightly wider than the interval between the 

 eyes, feebly sulcate below the ocellus; fastigium narrowly and rather 

 deeply sulcate, the sul cation of equal width but varying depth. 

 Ground color of pronotum yellowish brown, the posterior margin dis- 

 tinctly but obtusely and not sharply angulate, the disk of the prozona 

 distinctly though but slightly transverse, with no median carina. 

 Prosterual spine short, conical, erect. Tegmina considerably surpass- 

 ing the abdomen, exceptionally slender, with very slight subbasal 

 expansion of the costal area, subacuininate apically, brown, but with 

 the larger distal portion pellucid, flecked with brown by the alternately 

 deeper and lighter brown of the veins, the cross- veins mostly white or 

 pellucid; wings not much shorter than the tegmina, not very broad, 

 the veins blackish brown anteriorly, brownish blue in the anal area. 

 Hind femora dull luteous, the outer face with three more or less con- 

 fluent, transverse, blackish brown stripes, indicated by transverse fus- 

 cous cloudy bars on the upper faces, the arc of the geniculation heavily 

 marked in black; hind tibiae pink, becoming gradually plumbeous 

 distally, the spines pallid on the basal, black on the apical half. 

 Supraanal plate of male subtriangular with sinuous sides and a pro- 

 duced and rounded apex, the surface plane or nearly plane, but with 

 two pairs of very slight longitudinal ridges, one pair bounding the 

 basal median sulcation, which narrows distally and terminates beyond 

 the middle of the plate, the other lateral, oblique, and less sharp, prox- 

 imally at the lateral margin, distally a little removed from it and ter- 

 minating at a similar distance from the base as the other pair; furcula 

 barely indicated by an attingent pair of scarcely projecting disks; 

 cerci rapidly tapering at base, nearly the entire distal three fifths sub- 

 equal, slender, cylindrical, straight, blunt-tipped, surpassing slightly 

 the length of the supraanal plate; subapical tubercle of subgeuital 



