1921] NATURAL SCIENCES OF PHILADELPHIA. 197 



divisions) complete branches, intercalated triangle ample, nearly 

 two-thirds as broad as long. Dorsal surface of abdomen with sixth 

 tergite shallowly concave meso-proximad, this area transverse oval 

 in outline, its surface carpeted with agglutinated hairs. Seventh 

 and eighth tergites distinctly narrower, moderately exposed along 

 their caudal margins. Supra-anal plate triangular with apex 

 blunted, subchitinous, subemarginate, its length approximately 

 two-fifths its basal width, showing no slight emargination at the 

 cereal bases as does that of mamatoco. Cerci much as in that species, 

 but smaller, the (10) joints similarly well defined. Paired plate 

 beneath supra-anal plate large and unspecialized. Subgenital 

 plate with surface very weakly convex, very short, sinistral portion 

 slightly more produced than dextral, caudal margin nearly trans- 

 verse, showing very slight production to median fourth, dextrad 

 very feebly concave, median portion fusing with the large, elongate 

 and lamellate styles, which are represented by nearly vertical 

 plates, attingent at their distal extremities, each about two and 

 one-half tunes as long as its basal width, the disto-dorsal angle very 

 broadly convex, the disto-ventral angle bluntly, but much more 

 sharply, convex. These plate-like cerci in the present species give 

 to the subgenital plate a strongly Chorisoneurine facies. Limb 

 armament, pulvilli, arolia and tarsal claws as characteristic of the 

 genus. "^ 



General coloration buffy, with a faint tinge of buckthorn brown. 

 Head very pale flesh color, occiput with four irregular, vertical 

 streaks and flecks of dark prouts brown , a transverse band of prouts 

 brown between the eyes just above the ocelli, narrow^ laterad but 

 wider mesad, due to the greater convexity of its dorsal margin, a 

 very broad transverse band of prouts brown between the antennal 

 sockets, which contains a very broadly V-shaped transverse buffy 

 area mesad. Mouthparts and palpi clear clay-color. Antennae 

 in proximal (24 joints) portions clear clay-color, succeeding ten 

 joints mummy brown, followed by a striking and broad annulus (in- 

 cluding 5 joints) of warm buff, the remaining distal joints mummy 

 brown. Pronotum with disk light ochraceous-buff, broad lateral 

 portions transparent, the whole faintly tinged with buckthorn 

 brown, disk thickly tessellate with minute dots and a few lines of 

 prouts brown, as figured, broad lateral portions and cephalic mar- 

 gin marked with more scattered and even smaller dots of prouts 

 brown, the entire immediate margin, from point of greatest width 

 caudad, of this color. Tegmina transparent, faintly tinged with 

 buckthorn brown, marginal field with many very minute flecks of 

 ochraceous-taw^ny, other portions with minute areas between veins, 

 spurious veins and veinlets ochraceous-tawaiy, these proximad ir- 

 regularly square or transverse, distad longitudinally linear and all 

 so fine as to be individually scarcely appreciable to the naked eye. 



« Described in Trans. Am. Ent. Soc, XL VII, p. 115, (1921). 



