166 ENTOMOLOGICAL Nl | xxxii, '21 



surface ventrad with minute irregular impressed lines and dots, but 

 with no transverse ridge or sulcus. Maxillary palpi short, third joint 

 two-thirds as long as the large fifth joint, fourth joint threfe-quarters as 

 long as third, widening evenly distad. 



Lateral marginal portions of pronotum very narrow, deplanate. Teg- 

 mina with marginal field very narrow and curled dorsad at costal mar- 

 gin; discoidal sectors (five) longitudinal, the last sending (one and 

 three) branches to the sutural margin. Wings very delicate, with con- 

 spicuous cross-veins between mediastine and discoidal veins, between 

 discoidal vein and its branch and less decided between ulnar vein and its 

 branch. 



Dorsal surface of abdomen with latero-caudal angles of seven tergites 

 bluntly rounded, of eighth very broadly rounded. Sixth tergite with a 

 large, deeply concave, transverse oval depression mesad, containing a 

 prominence meso-caudad which bears a heavy tuft of agglutinated hairs 

 directed cephalad. Eighth tergite with caudal margin above supra-anal 

 plate broadly and roundly obtuse-angulate emarginate. Supra-anal plate 

 with length two-fifths basal width, very slightly produced at bases of 

 cerci, the caudal margin between these nearly transverse, very weakly 

 convex. Sinistral plate of concealed genitalia produced meso-dorsad 

 in a fang-like tooth. Subgenital plate slightly more produced dextrad 

 than sinistrad, the similar styles small, simple, cylindrical, about twice 

 as long as greatest width with apices bluntly rounded, sinistral style 

 at internal margin of cercus, dextral style decidedly mesad of the homo- 

 logous point dextrad, free margin laterad to these styles irregularly 

 convex, between them irregularly concave. 



Head, palpi and ventral surfaces of thoracic segments blackish mum- 

 my brown. Mouthparts and proximal joints of antennae dresden brown, 

 remaining portions of antennae blackish mummy brown, except for a 

 meso-distal annulus of light buff, occupying seven joints. 



Pronotum blackish mummy brown, .except the narro\v lateral portions 

 which are hyaline, very faintly tinged with ochraceous-tawny. Teg- 

 mina proximad, in area as long as head and pronotum, translucent 

 mummy brown, as dark as pronotum when closed ; remaining portions 

 transparent, tinged with ochraceous-tawny, this very weak in area of 

 dextral tegmen, concealed when at rest, the veins of which area are 

 weakly stained with mummy brown in the distal portion. 



Dorsal and ventral surfaces of abdomen huffy tinged with tawny, 

 becoming blackish mummy brown distad, sixth tergite with tuft of 

 agglutinated hairs tawny. Cerci light ochraceous-tawny. 



Cephalic coxae and all but distal portions of median and caudal coxae 

 blackish mummy brown, the distal portions of the latter ochraceous- 

 buff with a tawny tinge. Cephalic femora blackish mummy brown, 

 becoming ochraceous-buff with a tawny tinge dorsad, median femora 

 ochraceous-buff with a tawny tinge, becoming blackish mummy brown 



