NO. 1938. THE DIPTEROUS FAMILY PHORID^—MALLOCH. 463 



rather thick, palpi large, moderately bristled, proboscis yellow, long, 

 projecting, rather tapering and chitinised; two dorsocentral thoracic 

 bristles; scutellum wdth two strong bristles and two anterior hairs, 

 mesopleurse bare; abdomen with first and sixth segments mostly 

 yellow, the others black, second segment laterally dilated, several 

 bristles on lateral margins, third segment mth a regular row of strong 

 hind-marginal and several lateral bristles, sixth segment elongated, 

 with several long bristles at apical third; ovipositor exserted, 

 chitinised, of nearly equal width for its entire length, about two and 

 one-half times as long as broad, truncate apically; legs yellowish, 

 hind pair darker, hind tibise mth setulse on postero-dorsal surface, 

 those on apical half very distinct; costa to middle of wing, first 

 division one and one-half times as long as second, fork of third vein 

 acute, costal fringe of moderate length, as long as fork of third vein, 

 fourth vein leaving at fork of third with a gradual bend and running 

 with a sweep to near tip of wing, fourth, fifth, and sixth veins at 

 nearly equal distances from each other in disk of wing; halteres pale 

 yellow. 



Length, 2 mm. 



One female. "Bred from abdomen of Camponotus pennsylvani- 

 cus," August 22, 1901 (T. Pergande), Washington, District of 

 Columbia. 



The chitinised ovipositor may be for the same purpose as that of 

 Apoceplialus pergandei Coquillett, and the fact that this specimen 

 was bred from the same host would seem to bear this out. 



Type.— Cat. No. 14850, U.S.N.M. 



APHIOCH.aETA FISHERI, new species. 



Female. — Yellow; frons black, yellowish above the antennae, lower 

 pair of post-antennal bristles rather more than half the size of upper 

 pair, which are strong; antennas yellow, brownish at tip, arista 

 longer than frons, pubescent, palpi yellow, with normal bristles; 

 proboscis large and fleshy, protruding; thorax clear yellow, anterior 

 pair of scutellar bristles reduced slightly in size, abdomen with either 

 the hind margins of segments narrowly yellow, or the lateral margins 

 broadly black carried across on the anterior margins in a narrow 

 band, second segment not elongated, but with some inconspicuous 

 bristles laterally; legs ^^ellow, hind femora with apices infuscated, 

 mid tibial setulae indistinct, those on apical half of hind tibia (8-9) 

 large and distinct, wings grayish, veins brown, neuration as in table, 

 halteres yellow. 



Length, 2^3 mm. 



Type.— C&t. No. 14851, U.S.N.^L 



Two females, Plummers Island, Maryland, May 16, 1907 (A. K, 

 Fi§her); May 30, 1907 (W. L. McAtee). 



