220 Maine; vvgriculturai, i;xperime;nt station. 1909. 



with 3 brown stripes. Scutellum yellowish. Coxse and legs 

 yellowish, tibiae and tarsi more or less brown; tibi^ and tarsi 

 of hind legs subequal in length. Wing cinereous tinged, veins 

 and stigma brown; sometimes with indistinct spot just distad 

 of the R-M crossvein; the subcosta ends in the costa distad of 

 the base of the radial sector, at least in the male; the M-Cu 

 crossvein present, though short and stout. Halteres with 

 brown knob. White Mts., N. H. (det. Coquillett) and May- 

 field Cave, Ind. (det. Adams). Selkirk Mts., B. C. ; collected 

 by J. C. Bradley. 



4. Bolitophila montana Coquillett. 



1901. montana. Coquillett, Proc. U. S. Nat. Museum, 



XXIII. 593. 



Female. Length 4.5 mm. Dark brown, the base of the 



third antennal joint, peduncle of the halteres, coxse, femora and 



tibiae light yellow, sides of mesonotum largely brownish yellow, 



mesonotum polished ; wings hyaline, stigma elongate oval, 



gray; subcosta reaches only slightly beyond middle between 



humeral crossvein and base of the radial sector, R2+3 terminates 



in the costa, the media at its base coalescing for a short distance 



with the upper branch of the cubitus. Mount Washington, 



N. H. 



Male specimen from Ithaca, New York, taken in September 

 has the antennae over 3-4 as long as the body, and the fore 

 metatarsus .9 as long as its tibia, which is half as long as the 

 wing. It differs from the female in having a shining black 

 mescnctum and dark brown pleura, and also in the length of 

 the subcosta which ends somewhat distad of the point midway 

 between the subcostal crossvein (not humeral crossvein) and 

 the base of the radial sector. 



2. Genus Hesperinus Walker. 



Hesperimis Walker, List Dipt. Brit. Mus. I, 81. 1848. 



Spodnis Loew, Berl. Ent. Zeitschr. II. 108. 1858. 



Rather large, bare, blackish species resembling Bolitophila 

 in habitus. Head small, round, palpi incurved, 4 segmented; 

 antennas 12 jointed ; eyes round, ocelli 3. Atdomen slender, 

 with 7 or 8 visible segments. Legs long and slender, coxae not 



