136 INSKCUTOR INSCITI.5; MENSTRUUS 



Stigma grayish brown ; small brown clouds at the origin of 

 the sector and along the cord ; conspicuous clouds in cell R^ 

 except the base, cells M■^^ and 2nd M^, cell M^ except the 

 base ; conspicuous clouds in the center of cells Cu^, ends of 

 the anal cells, base and tip of cell Cu and two conspicuous 

 areas in cell M, one near midlength, the second, larger, in the 

 outer end of the cell ; a conspicuous obliterative streak before 

 the cord, extending from cell ist R^ across the basal third of 

 cell ist M^ into the base of cell M^ ; veins dark brown. 

 Venation : Tip of R2 about one-half longer than Ro-^z ', cell 

 1st M2 elongate, the sides parallel ; petiole of cell M^ a little 

 longer than m; m-cu at about one-third the length of cell 

 1st M^. 



Abdominal tergites brown, the lateral margins broadly and 

 conspicuously buffy gray; sternites similar but sparsely 

 pruinose, the caudal margins of the sternites and the sub- 

 terminal tergites very narrowly reddish yellow. Male hypopy- 

 gium simple, the sclerites covered with pale, appressed, silken 

 hairs. Ninth tergite flattened, the caudal margin with a very 

 broad and shallow V-shaped notch, the edges narrowly black- 

 ened. Ninth stenio-pleurite projecting slightly caudad, pro- 

 foundly but narrowly split medially, the cephalic-median area 

 membranaceous ; outer pleural appendage small, cylindrical. 

 Eighth sternite practically unarmed, the dorsal caudal margin 

 with a small area of black bristles on either side of the median 

 line. 



Female. Generally similar to the male, differing as follows : 

 Antennse much shorter. Legs shorter and stouter. Wing? 

 reduced to pads that extend about to the end of the second 

 abdominal segment ; wings inf uscated with somewhat paler 

 bases ; venation considerably distorted but showing approxi- 

 mately the same arrangement as in male ; macrotrichise along 

 the costal margin; a dense series of from 55 to 60 along R; 

 about 9 along R^-^-r, ; about 4 on the basal portion of M ; a 

 series of about 9 powerful spinous setae on the basal section 

 of Cu before the arculus. Abdomen rather elongate, the 

 tergites mostly highly polished, dark chestnut brown, the 



