FUNGI'S GNATS OF NORTH AMERICA. IO7 



2 to 4 of abdomen, brown above. Wing yellowish, crossveins broadly 

 margined with brown. Legs pale clay yellow, tarsi brownish. "Pa." 



46. Mycctophila bifasciata Walker. 



List, of Dipt. L 96. 1848. 

 Head and chest black, clothed with short tawny down; eyes and feel- 

 ers black, the latter ferruginous at the base: scutcheon ferruginous; 

 abdomen brownish black : hind borders of the segments tawny ; feet, 

 thighs at the base and at the tips, and tips of the hind hips, 

 1)rown ; wings somewhat gray, clouded with brown below the for? 

 border about the middle and near the tip, which is also indistinct'y 

 clouded with gray; veins brown; poisers tawny. Length of the body 

 5mm. St. Martin's Falls, Albany River, Hudson's Bay. 



47. Mycctophila parva Walker. 



List, of Dipt. L 97. i8j8. 

 Head brown ; eyes black, palpi tawny ; feelers brown ; j^ellow at the 

 base ; chest reddish brown, varied with tawny on each side ; breast 

 yellow ; abdomen reddish brown ; hips and thighs yellow, tips of the 

 latter brown ; shanks dull tawny ; feet brown ; wings slightly gray, with 

 two brown spots beneath the fore border; the one nearest the tip of 

 the wing is larger and more irregular than the other; veins brown, 

 poisers yellow. Length of the body 2.5 mm. St. Martin's Falls, Albanj 

 River, Hudson's Bay. 



48. Mycctophila lacta Walker. 



List, of Dipt. L 97. 1848. 

 Body thickly clothed with yellow hairs; head brown; eyes black: 

 palpi tawny ; feelers dull tawny yellow at the base ; chest bright tawn}' ; 

 its hind part pale reddish brown and varied with yellow ; abdomen 

 reddish brown, with five yellow bands along the sutures of the 

 segments; hips and thighs pale yellow; tips of hind thighs brown; 

 shanks pale tawny; feet brown, wings slightly tawny, especially towards 

 the fore border, and adorned with two brown bands of which the one 

 nearest to the wing tip is much larger and more irregular than the 

 others. Veins tawny ; poisers white. Length of body 3.5 mm. Nova 

 Scotia. 



49. Mycctophila contigiia Walker. ' 



List, of Dipt. L 96. 1848. 

 Body clothed with short yellow hairs; head tawny; eyes black, palpi 

 tawny; feelers brown, tawny at base; chest reddish brown, yellow or 

 each side in front. Abdomen reddish brown ; hind border of each 

 segment pale yellow ; legs pale yellow ; tips of hind thighs brown ; feet 

 and tips of shanks dull tawny; wings pale tawny adorned with two 

 brown bands, of which the one nearest to the wing tip is much longc:r 

 and more irregular than the other; veins dark tawny; poisers bright 

 tawny. Length of the body 3 mm. Nova Scotia. 



