Vol. XXVJ ENTOMOLOGICAL NEWS 359 



Palpi very short, dark brown ; frontal prolongation of the head 

 short, light gray; antennae very long, if bent backward extending 

 about to the eighth abdominal segment, scapal segments light brown, 

 flagellar segments very dark brown ; after the first, each segment is 

 swollen at its base and less so before its tip, provided with a few 

 black bristles and abundant long pale hairs. (See Plate XV, figure 

 18). Front with a well defined tubercle which is bisected by a deep 

 median furrow ; head gray. 



Pronotum dark brown, bordered with gray ; mesonotal praescutum 

 very light gray with four bright brown stripes, one on either side 

 of the median line, pale and indistinct in front, clearer behind; lateral 

 stripes short, lateral margin of the sclerite of the same color; scutum 

 gray, the anterior end of each lobe with a rounded chestnut brown 

 spot ; scutellum and postnotum light gray, the latter dusky on the 

 sides. Pleurae clear light gray. Halteres light brownish yellow bas- 

 ally, passing into brown. 



Legs, coxae light gray, trochanters yellow ; femora light brown, 

 dark brown at the tip ; tibiae and tarsi brown. 



Wings subhyaline, cells C and Sc pale brown, a brownish tinge in 

 the vicinity of the stigma, at ends of cells R2 and RS; hyaline blotches 

 POT well defined. Venation, see Plate XV, figure 5. 



Abdomen, tergites 1-4 bright yellow, 5-8 passing into brown ; 9 light 

 yellow ; sternites yellowish ; the lateral margins of the tergites are 

 broadly dark brown. The male genitalia with the 8th tergite broad, 

 dark colored, except at the base where it is reddish ; gth tergite very 

 pale yellow, viewed from above (see Plate XV, figure 11), large, 

 subquadrate, the outer lateral angles rounded, caudal margin with a 

 very deep median notch ; viewed from the side the caudo-lateral mar- 

 gin with a rather sharp protuberance. Eighth sternite (Plate XV, 

 figure 10) with the caudal margin rounded and with a prominent me- 

 dian protuberance. Ninth sternite (from beneath, see Plate XV, 

 figure 12) with the caudal margin produced backward as a promi- 

 nent, sub-lyriform appendage; viewed from the side, the gth sternite 

 is small, the pleural piece complete, almost oval, its ventro-caudal 

 margin applied closely to the caudal appendage of the 9th sternite. 

 Pleural appendages two, the more cephalic and dorsal being a long, 

 cylindrical fleshy appendage, pale, clothed with long hairs, directed 

 dorsad; the second appendage is large, viewed from behind (see 

 Plate XV, figure 9) ; it is slender basally, with the inner part of the 

 base clothed with long pale hairs, the tip expanded out like a knife 

 blade, meeting its mate of the opposite side on the median line, the 

 caudal face of this blade with a few transverse ridges, the outer 

 face somewhat chitinized, in contact with a chitinized appendage 

 having the same general blade-like shape which lies between the 

 caudal appendage and the 9th tergite. 



