NO. 1938. THE DIPTEROUS FAMILY PHORIDM— M ALLOC H. 485 



One female, Mount Washington, New Hampshire (collection Co- 

 quillett), among the duplicates of A. nifipes Meigen in collection. 

 One male, White Mountains (Morrison). 



May be confounded with sublutea, new species, but the larger post- 

 antennal bristles and very long fringe, as well as the darker color 

 should be enough to separate them easily. 



APHIOCH^TA SUBOBSCURATA, new species. 



Female. — Similar to the previous species but differing in having the 

 frons rather narrower and longer, nearly as long as wide, pale in cen- 

 ter anteriorly, the post-antennal bristles closer together, the center 

 pair of bristles in front row lower on frons than outer pair and further 

 toward the center; the pleurae are lighter in color, especially ante- 

 riorly, and the margin of thorax is paler; the first costal division is 

 distinctly longer than the other two together, the third is rather more 

 than one-half as long as second, the fringe is shorter, the bristles being 

 only as long as fork of third vem and not twice as long as in anomala, 

 the fourth vein leaves at distinctly beyond the fork of third, otherwise 

 as anomala. 



One female. Mount Washington (collection Coquillett). 



I do not think that this can possibly be a variation of anomala, as 

 it differs so much in important characters. 



Type.— C&t. No. 14882, U.S.N.M. 



APHIOCH^TA FUNGICOLA Coquillett. 



Brown or black-brown; frons longer than broad, brown, paler an- 

 teriorly, with numerous pale hairs, in the only one of the type-speci- 

 mens that preserves the frontal bristles in any degree intact they seem 

 to be arranged as in furtiva, antennse brown, paler at base, arista paler 

 than third joint of antennse, slightly pubescent, palpi yellow, normal; 

 thorax shining, black to brown and in immature specimens yellowish; 

 abdomen brown, second segment slightly elongate, others subequal, 

 no noticeable bristles present, legs yellow, hind tibige with dorsal ridge, 

 but setulse very weak and indistinct; costa to just about middle in 

 female, rather shorter m male, first division about one-third longer 

 than other two in male, but just a trifle longer in female, fringe short 

 and delicate, fourth vein slightly curved at base and ending distinctly 

 in front of wing tip; halteres black or black brown. 



Length, 1-1^ mm. 



This species comes close in appearance to A. aletise Comstock, but 

 may be separated from it by the characters given in description. ■"' I 

 believe that the color of the halteres in this species is constant, at 

 least it is in all the specimens in the collection, and that the variety 

 mentioned by Brues really was aletise Comstock, or some closely 

 allied species. There are six specimens in the collection (the types) 



