440 EXTOMOLOGICAL NEWS [DcC, '14 



circular emargination at tip; (Fig. 10) all femora with rather long 

 hairs below ; middle tibiae with a pair of small bristles at basal fourth ; 

 fore and hind tibiae without bristles; hind tarsi with the first joint a 

 little more than half as long as the second. 



Halteres pale j-ellow with the stem brown; tegulae w^hitish, bordered 

 with brown, and with white cilia. 



Wings grayish, hyaline ; veins dark brown, a little paler at base 

 of wing; posterior cross-vein and distal segment of fifth vein of about 

 equal length. 



Described from one female taken at Kearney, Ontario, July 

 6, 19C9. 



This runs in Wheeler's key to the species of this genus to 

 M. maurus Wheeler, but differs from that species by the an- 

 tennae having only the first joint yellow, no trace of bluish on 

 the face or body, and by having brown pollen on the dorsum 

 of the thorax. The emargination of the fore coxae is, I think, 

 a character peculiar to this species. 



The ovipositor in the described specimen is very much ex- 

 serted ; this may not be the case normally, but I think that it is. 



Medeterus modestus n. sp. 



^ . Length 2.75 mm. Altogether brownish black; face shining 

 with a greenish luster in some lights, with gray pollen in the suture and 

 along the orbits below the suture ; proboscis shining black, moderately 

 large ; cilia of the lateral and lower orbits white ; pleurae and coxae 

 with W'hite pollen. 



Dorsum of the thorax with brown pollen and black bristles ; two 

 gray stripes are quite distinct on the forepart of the thorax in some 

 specimens; scutellum with greenish reflections and with four marginal 

 bristles. 



Abdomen shining on the dorsum and with white pollen on the 

 sides ; hypopygium long and rather slender, the inner appendages some- 

 what yellowish. 



Fore coxae with minute pale hairs on the front surface, those at the 

 tip bristle-like ; middle coxae with whitish bristles on the front sur- 

 face; hind coxae with one erect whitish bristle on the outer side and 

 three or four pale bristles above the fore coxae; second joint of hind 

 tarsi about twice as long as the first. 



Halteres brown on the outer surface, paler on the inner side in some 

 specimens ; tegulae and their cilia brownish. 



Wings grayish, hyaline, a little yellowish at the root; veins dark 

 brown or black, scarcely paler at the base of the wing; posterior cross- 

 vein straight, about as long as the distal segment of the fifth vein. 



