292 THE CANADIAN ENTOMOLOGIST 



behind the pseudosuture, broaden out behind and fuse with tl-.o 

 median stripe near the transverse suture; scutum, lobes brown, 

 median line paler; scutellum lighter colored, yellowish medially, 

 brown on the sides; postnotum brown. Pleura? brown excei^t 

 dorsally, where there is a pale band running from the pronotum 

 back to the wing basis. Halteres light yellow. Legs: coxa and 

 trochanters pale yellow, fem.ora short, incrassated beyond the base, 

 brown, paler basally; tibiae and tarsi brown. Wings slightly tinged 

 with yellowish-grey; 'veins yellow. Venation (see fig. 11, plate III). 

 Abdomen, tergites dark brown; stcrnites rather lighter brown, 

 extreme apices of the sclerites pale. Hypopygium (see figs. 3 and 4, 

 plate X) ; 9th tergite and sternite completely fused so that no pleural 

 suture remains; viewed from beneath, the 9th sternite projects 

 backward, its caudal margin rather squarely truncated; the outer 

 ventral pleural arm is straight, fleshy, rather thickly covered with 

 long hairs; just entad of the outer arm and nearer to the base of the 

 pleurite, arises the inner \-entral pleural arm, which is elongate, 

 slender, its tip strongly chitinized and denticulated at the extreme 

 end and bent inward; the guard of the penis is a pointed, chitinized 

 organ, nearly as long as the outer pleural arm. Viewed from the 

 side, outer ventral arm of the pleurite directed caudad ; inner ven- 

 tral arm with the tips conspicuously arcuated and bent ventrad; 

 just above the base of the inner arm arises the dorsal pleural ap- 

 pendage, very broad at the base, its tip chitinized and directed 

 slightly dorsad, on the dorsum of the pleurite are two protuber- 

 ences clothed with long hairs. Viewed from abo\e, the pleurites 

 are very broad, 'so that the space between them on the median line 

 is narrow; about midway of their length, on the inner face, is a 

 strong protuberance, directed inward; it is strongly chitinized and 

 almost touches its mate of the opposite side. 



Female. — Similar, but larger; the abdomen is dark brown, the 

 genital segment much brighter, yellowish-brown. 

 Vial No. 19.— Tokio, Japan; June 25, 1912; 1 9 . 

 Vial No. 20.— Tokio, Japan; June 25, 1912; 1 9 . 

 Vial No. K.— Tokio, Japan; Aug. 1912; 1 o". 

 Holotype. — 1 cT, Vial K. 

 Allotype.— 1 9 , Vial 20. 

 Paralype.— 1 9 Vial 19. 



