J. R. MALLOCH 259 



dilated. Thorax without strong presutural acrostichal bristles; postsutiiral 

 dorsocentrals four; prealar very long; hypopleura hairy on upper margin in 

 front of spiracle. Abdomen ovate, basal sternite bare, fifth with a deep, 

 .^lightly rounded posterior excision. Fore tibia with a median posterior 

 bristle; fore tarsus longer than tibia, the basal segment without long sensory 

 hairs along posterior surface; mid femur with two or three bristles on basal 

 third of posteroventral surface; mid tibia with four or five posterior bristles 

 and usually one longer bristle on middle of posteroventral surface; hind femur 

 with a number of long bristles on basal third of posteroventral .surface; mid 

 tibia with four or five posterior bristles and usually one longer bristle on 

 middle or posteroventral surface; hind femur with a number of long bristles 

 on apical half of anteroventral surface and some short stout spines or bristles 

 in a single or double series on apical half of posteroventral; hind tibia with 

 about four anterodor.sal bristles, the anteroventral surface with about four 

 weak setulae, which are not much stronger than the erect series on the anterior 

 and posterior surfaces, basad of the calcar there are usually from one to three 

 additional bristles on the same surface (fig. 24). Outer cross- vein curved. 



Female. — Differs from the male in having the eyes almost bare, separated 

 by fully one-third of the head width, the fore tibia usually with an antero- 

 dorsal and an extra posterior bristle, the hind femur with the short postero- 

 vental bristles antl the hind tibia with the erect anterior setulae and posterior 

 hairs absent. 



Length, 7 to 8 mm. 



Originally descril^ed from Illinois and Pennsylvania. I have 

 seen most of the material that Stein used in describing the 

 species and in addition have examined specimens from Buffalo, 

 Lancaster, Niagara Falls, and Hamburg, New York, and Quebec 

 and Ontario, Canada. 



Phaonia soccata (Walker) 



Anthomyia soccata Walker, List. Ins. Brit. Mus., pt. 4, p. 941, 1849. 



This species has a similar coloration to that of serva Fallen 

 and its allies, but the legs are reddish yellow except the tarsi. 

 The thorax is not distinctly vittate, and the alidomen is marked 

 as in serva. 



The eyes of the male are rather long haired and widely 

 separated, the narrowest part of frons being about one-fifth of 

 the head-width; the orl^its are bristled to a little above the level 

 of the anterior ocellus; parafacial as wide as third antennal 

 segment, not narrowed l)elow; longest hairs on arista barely as 

 long as width of third antennal segment. Thorax without 

 strong presutural acrostichals; prealar very long; postsutural 

 dorsocentrals four; liypoplcura hairy on upper margin in front 



TR.\N.S. AM ENT SOC, XLVUI. 



