Malloch — Some New Eastern Anthomyiidae (Diptera). 209 



Eyes with a few very inconspicuous hairs on lower half ; f rons at narrowest 

 part over twice as wide as width across posterior ocelli; each orbit a little 

 over half as wide as interfrontalia, with some moderately long bristles and 

 shorter hairs, which extend almost to anterior ocellus; third antennal joint 

 narrow, about twice as long as second, extending about four-fifths of the 

 way to mouth-margin; arista with its longest hairs not as long as width of 

 third antennal joint; parafacial nearly twice as wide as third antennal joint 

 and half as wide as height of cheeks, the latter with a series of strong bristles 

 along lower margin and above these 2 or 3 strong upwardly curved bristles; 

 vibrissal angle slightly produced, with a number of short bristles at base of 

 vibrissa. Thorax as in errans Meigen except that the hypopleura is bare. 

 Abdomen ovate; hypopygium not protruded, but rather large; fifth sternite 

 with short stout processes, separated basally by a quadrate incision, their 

 inner margins concave on apical half, the apices slightly chitinised, surface 

 of sternite with numerous, but not conspicuous bristles; basal sternite bare. 

 Fore tibia with or without a median bristle; mid femur with a complete 

 series of postero-ventral bristles; mid tibia with about 4 posterior bristles 

 in an irregular double series; hind femur with bristles on entire length of 

 antero-ventral surface, those on basal half short, the postero-ventral sur- 

 face with long bristles on basal half; hind tibia with 2 or 3 antero-dorsal and 

 3 antero-ventral, bristles, the postero-dorsal surface with two bristles above 

 the usual calcar, the latter strongest; claws and pul villi all long. Third 

 vein bare at base; last section of fourth vein about 1.5 as long as preceding 

 section; outer cross- vein curved. 



Length, 9 mm. 



Type, Beltsville, Md., April 1, 1917 (W. L. McAtee). One male. 



This species resembles errans and rufibasis in habitus but differs in many 

 respects from both of these. The only species known to me from North 

 America which has additional bristles above the calcar is deleta Stein, but 

 the other armature of the hind tibia and also that of the hind femur of that 

 species differs very much from that of aberrans. 



Hylemyia winnemana, sp. n. 



Male. — Black, slightly shining, with distinct, but not dense pruinescence. 

 Head with white, almost silvery pruinescence on orbits, face, and cheeks. 

 Thorax indistinctly trivittate. Abdomen densely whitish pruinescent, with 

 a dorso-central vitta and the anterior margin of each tergite black. Wings 

 clear. Calyptrae white. Halteres yellow. 



Eyes separated by a little more than width of anterior ocellus; parafacial 

 nearly as wide as third antennal joint, narrowed below; cheek about as 

 high as width of third antennal joint, with a series of slender marginal 

 bristles, a few of those near anterior angle upwardly curved; arista pubes- 

 cent. Thorax with 3 or more pairs of slender presutural acrostichals; pre- 

 alar over one third as long as the bristle behind it; sternopleurals 1 :2. Ab- 

 domen slender, segments subequal in length; hypopygium large, but not 

 very conspicuous; fifth sternite with long processes which are about twice 

 as long as broad, bare except for a few short surface hairs, and a long strong 



