MORGAN HEBARD 181 



with lateral portions broad, as is characteristic of this group of Chorisoneura. 

 Teginina elongate, though not as elongate or as acute at apex as in pellucida, 

 extending to apices of cerci; marginal field very broad, apex sharph' rounded, 

 moderately acute; discoidal vein with numerous branches and false nervures 

 toward costal margin, discoidal sectors (fourteen, counting the numerous 

 supplementary branches) oblique. Wings with intercalated triangle acute- 

 angulate proximad, numerous costal veins heavily and briefly clubbed distad ; 

 discoidal and median veins connected by transverse veinlets; ulnar vein 

 branching distad. Sixth dorsal abdominal segment with a very large, round, 

 slightly impressed area mesad, its surface well supplied with minute, micro- 

 scopic, procumbent hairs. Supra-anal plate nearly one-third as long as 

 basal width, triangularly produced between cerci with apex truncate, sub- 

 bilobate. Subgenital plate as>anmetrical (see plate VII, figure 8); sinistral 

 style situated slightly sinistrad of median point, a deeply inset broad lobe 

 with apex rounded, ^^ upon dissection its internal surface is seen to be concave, 

 its margins free except sinistrad, these margins proximad and dextrad fringed 

 with very minute, nearly procumbent, chaetiform spines; dextral style dex- 

 trad of and touching the dextral margin of the sinistral style, considerably 

 more produced caudad, a finger-like process, bent mesad with distal half 

 directed caudad, the apex shghtly thickened with margin rounded, upon 

 dissection its internal surface is seen to be concave;'- the internal surface of 

 the plate is also deeply concave toward the sinistral and dextral margins, 

 these marginal portions separated from the remaining broadly concave 

 surface by decided, lamellate, somewhat irregular ridges. Limb armament, 

 pulvilli, tarsal claws and arolia as characteristic of the genus. 



Head with vertex ochraceous-bufl", shading to ochraceous-tawny, this 

 extending to just before narrowest point between eyes, where it is in abrupt 

 contrast with the light buff inter-ocular-ocellar area. In this intersection are 

 two (often obscured) dots of prout's brown.'' Antennae, remaining portions 

 of face and palpi warm buff. Pronotum with hexagonal disk ochraceous- 

 buff very faintly tinged with tawny, lateral portions transparent showing a 

 very faint brownish buffy tint. Scutellum with a moderately large median 

 dot of light buff. Tegmina with marginal and external two-thirds of scapular 

 fields as lateral portions of pronotum, remaining portions with veins and 

 veinlets buffy, the remaining portions transparent tinged with ochraceous- 

 tawny. Wings transparent washed weakly with ochraceous-tawnj', this 



21 Giving the appearance of the apical portion of the plate, separated from 

 the other portions by a suture. 



'^ In the series slight irregularities in the contour of the lobifonn sinistral 

 and finger-like dextral style is shown, their general tj'pe remaining, however, 

 the same. 



''The whitish area is immaculate in the type, but in the majority of the 

 series two similar, but much more widely separated, dots of prout's brown 

 are found just below, and in some individuals two more similar dots occur 

 just below these, still more widely separated and touching the margins of 

 the eyes. 



TRANS. AM. ENT. SOC, XLVIII. 



