NO. 1938. THE DIPTEROUS FAMILY PHORID^—MALLOCH. 499 



1. . 



indistinct toward the tip; knob of halteres pale yellow, peduncle 

 brown. 



Length, ] \ mm. 



One female June 2.5, 1903, Kaslo, British Columbia (R. P. Currie). 



Type.— Cat. No. 14893, U.S.N.M. 



APmOCH^TA AGARICI Lintner. 



Male and female. — Black subshining; frons distinctly broader than 

 long, upper post-antennal bristles stout but not very long, very close 

 together, lower pair minute or absent, first row of bristles in a slightly 

 convex row with the post-antennal pair, second row convex, center 

 pair nearl}^ one-third the distance from ocellar triangle to post- 

 antennals, antennae black, of good size in male, smaller in female, 

 arista rather thick and short, slightly longer than breadth of frons, 

 black and nearly bare, palpi brownish, normal; thorax subshining, 

 scutellum with two bristles; abdomen dull, segments laterally with 

 short hairs, sixth with numerous distinct, but not very long hairs, 

 hypopygium small, ventral processes projecting, anal protuberance 

 short and stout, brownish, weakly hairy, terminal hairs weak, legs 

 black or piceous, anterior pair paler, setulse on hind tibias only rep- 

 resented by rather stronger hairs on the extreme tip; wings slightly 

 grayish, costa distinctly short of the middle, first division twice as 

 long as other two together, third barely equal to second (in one 

 specimen much shorter), fourth vein but little bent at base and apex, 

 slightly recurved at apex and ending distinctly in front of wing tip ; 

 halteres yellow, peduncle darker. 



Length, 1^-2 mm. 



A large number of specimens bred from Agaricus campestris and 

 Coprinus comatus. 



Localities. — District of Columbia, New Jersey, and New York. 

 Probably the commonest of the fungus feeding species. Recorded 

 as Phora minuta Aldrich, on authority of Dr. L. O. Howard, by 

 Lintner. * The identification was made by Coquillett and the speci- 

 mens are still in collection. 



APmOCH^TA PYGMAEA Zetterstedt. 



Black; frons very slightly shining, slightly broader than long, 

 upper post-antennal bristles large, lower pair very small, center pair 

 of bristles in first row much lower than outer pair, antennae brownish, 

 arista pubescent, barely longer than frons, palpi yellow, normal; 

 thorax brown; abdoman black, with pale hind margins to segments, 

 nearly bare, segments subequal, anal protuberance small and stout, 

 yellow; legs yellow, hind tibiae without distinct setulse, only with 

 rather weak hairs; costa to one-third the length of wing in male, 



1 Tenth Rep. N. Y. State Ent., 1895, p. 403. 



