133 INSECUTOR INSCITI^ MENSTRUUS 



brownish yellow, more grayish basally, the other coxae paler; 

 coxae clothed with rather long, pale hairs ; trochanters yellow ; 

 femora light brown, the tips broadly dark brown ; tibiae and 

 tarsi brown ; posterior metatarsi very long, considerably ex- 

 ceeding the tibiae. Wings light gray, the costal and subcostal 

 cells indistinctly yellowish ; stigma brown ; obliterative areas 

 before and beyond the stigma and across the base of cell 

 1st M2 ; veins dark brown. Venation : Rs and i?2+3 subequal ; 

 Rn oblique, the outer section in alignment with the base, Rn 

 subequal to r; petiole of cell M^ equal to m; m-cu short but 

 distinct ; cell 2nd A comparatively broad. 



Abdomen brownish yellow, the tergites with a broad, dark 

 brown, median stripe that gradually broadens out to cover the 

 entire segments on the outer half of the abdomen ; the yellow 

 color is the brightest on the sides of the basal two segments ; 

 sternites dark brown, the sides of the basal segments obscure 

 yellow. Male hypopygium small and of simple structure as in 

 the genus. Ninth tergite broad, the caudal margin with a con- 

 spicuous V-shaped median notch, the margins of the notch 

 provided with short black bristles; in a paratype, this notch is 

 considerably more rounded but evidently pertains to the same 

 species. Pleural appendages simple, the outer appendage flat- 

 tened, oval ; inner appendage with the cephalic end subtruncate 

 and provided with a comb of rather numerous tiny black 

 spines ; the caudal and dorsal surface of this lobe is provided 

 with a row of seven or eight strong black spines that are sub- 

 equally placed. 



Habitat. — New Zealand. 



Holotype, $, Otago (from Osten Sacken's collection). 



Paratopotypes, 15,1 Sex ?. 



This interesting fly is readily told by the short antennae and 

 coloration. One of the specimens bears the following note in 

 Osten Sacken's writing: "I saw $ in Oxford Mus. The 

 forceps is likewise small." The specimen to which this note 

 was affixed was, however, a male, the hypopygium of this 

 species being extremely small and resembling the fleshy ovi- 

 positor of the female. 



