1921] NATURAL SCIENCES OF PHILADELPHIA. 297 



with tegmina comparatively broad and short, broadly rounded dis- 

 tad, with venation more regular than in the forms of nearest affinity. 



Compared with peniculiger, the present species differs in the 

 larger size, slightly less delicate character of wings and portion of 

 dextral tegmen concealed when at rest, dorsal surface of abdomen 

 without hairs and distinctive type of genitalic specialization. 



Type: cf ; Cordoba, Cordoba, Argentina. (F. Schulz.) [Hebard 

 Collection, Type no. 673.] 



In addition to the features given in the generic description, we 

 would note the following characters which appear to be of specific 

 value. Interocular space slightly wider than that between antennal 

 sockets and wider than the occipital depth of the large eyes by 

 about one-fourth. Distal joint of maxillarj^ palpi as long as com- 

 bined length of second and third joints, expanding evenly to beyond 

 median point, thence with ventral margin oblique to the acute apex; 

 third joint very shghtly longer than fourth. Costal veins of teg- 

 mina numerous (16 to 19, including mediastine vein and its branches) 

 discoidal sectors (5 to 7 in series) longitudinal, except in area be- 

 yond apex of anal field where three or four are weakly oblique. 

 Dorsal surface of abdomen without hairs. Supra-anal plate trans- 

 verse, free margin broadly and evenly convex. Paired plate be- 

 neath siipra-anal plate with dextral portion developed ventrad 

 from beneath cercus in a slender, straight finger, directed meso- 

 dorsad and twice as long as the sinistral style, back of which is a 

 large plate, subchitinous in all but peripheral portion; sinistral 

 portion developed into a smaller though large chitinous lobe, which 

 tapers and curves dorsad to its acute apex. Subgenital plate asym- 

 metrical, sinistral margin weakly sinuous and very weakly Oblique 

 to slightly beyond median point, with sinistral style mesad on this 

 margin, springing from a socket on the dorsal edge; dextral margin 

 more strongly oblique to just l^efore median point, from the socketed 

 apex of the w^eak triangular production formed by these margins 

 springs the dextral style. Styles small, simple ; the sinistral straight 

 two and one-half times as long as its basal width, tapering slightly 

 to the rounded apex; the dextral style heavier, blunter and shorter, 

 scarcely twice as long as its basal width, showing a slight curvature 

 ventrad and with dorsal surface thickly armecl with very minute 

 spines. 



General coloration deep bister. Head blackish chestnut brown; 

 ocelli light buff, (type with ocelli discolored, dark) ; antennae, palpi 

 and mouthparts snuff brown. Pronotum deep bister. Tegmina 

 weakly transparent, heavily and evenly suffused with dresden 

 l)rown, except in portion of dextral tegmen, concealed when at rest, 

 which is transparent and very weakly suffused. Wings transparent, 

 colorless except in area of costal veins and distad in anterior field 

 where they are suft'used with dresden brown. Dorsal surface of 



