NO. 1938. THE DIPTEROUS FAMILY PHORID^—MALLOCH. 483 



APHIOCH.STA APPROXIMATA, new species. 



Female. — Black ; f rons dark, lower pair of post-antennal bristles nearly 

 as large as upper pair, center pair of bristles in first row a little lower 

 than post-antennal upper pair, and much nearer to center of frons 

 than outer pair in first row, which are a little higher than the upper 

 post-antennals ; antennae large, round, arista thick at base, pubescent, 

 palpi brownish yellow, normal ; thorax dull, mesopleural bristles of f au* 

 size, those on the posterior margin longer; abdomen dull, segments 

 subequal; legs brown, anterior pair paler, hind femora distinctly 

 ciliated on apical half of ventral surface; hind tibial setulse indis- 

 tinct except on middle; wings grayish, the small hairs on the disk of 

 wing more numerous than usual and especially along the fore margin 

 and tip, where they form a darker edging to the wing, much as in 

 conglomerata; costa to near the middle, first division shorter than 

 the other two together, but longer than second, third one-thii'd as 

 long as second, fringe long, fourth vein bent at base and ending at 

 distinctly in front of wing tip ; halteres yellow. 



Length, 2 J mm. 



Type.— Cat. No. 14878, U.S.N.M. 



One female, Chicago, 5-12-99. (No collector's name.) ' 



As in chsetoneura, there is a small bristle present at base of third 

 vein. There is a second specimen in the collection from Plummers 

 Island, Maryland, which agrees with the type in ever}^ way except 

 that the palpi are paler and the dark edging to wing is not so distinct. 

 I have seen a specimen from New Haven, Connecticut (Johnson), 

 that has the wings as in the Maryland specimen. 



APHI0CH.S;TA VULGATA, new species. 



Female. — Dull black, frons distinctly shining, gray dusted ante- 

 riorly, lower pair of post-antennal bristles nearly as large as upper 

 pair, center pair in first row a little lower than outer pair but nearer 

 to them than to the post-antennals, outer pair nearly in transverse 

 line with post-antennals, antennae of normal size, brown-black, arista 

 swollen at base but terminal part very thin and bare, palpi dull tawny 

 yellow, rather large, and strongly bristled; thorax dull, mesopleui'a 

 with rather long bristles, abdomen dull black, segments subequal, 

 with scattered short hairs but nowhere with noticeable bristles; 

 ovipositor brown; legs brown, only the anterior pair paler, hind 

 femora and tibiae strong, hind tibial setulas close and regular, but 

 not very long; costa to middle of wing, first division equal to other 

 two together, third about one-half as long as second, fringe long, 

 fourth vein slightly bent at base and ending with a slight upward 

 curve at distinctly in front of wing tip; halteres yellow. 



Length, If mm. 



