li)() NEW NORTH AMERICAN ANTHOMYIIDAE (dIPTERa) 



Hylemyia bicruciata sp. n. 



Malc—Dilfers from the preceding spccues in having the thorax and abtlo- 

 men less densely pruincseent, the former without a brown vitta on center, 

 and the latter with a much broader, tapered dorso-central vitta; the wings 

 are also more noti(;eably brownish. 



The head is somewhat similar to that of Dwcjacrphala, but the frons is not 

 so noticeably protuberant; the orbits have more numerous and weaker bristles, 

 and there are some interspersed weak hairs present; there are two pairs of 

 cruciate bristles on the interfrontalia, the upper pair weak, the antennae 

 are short, the third joint being about 1.5 as long as second, the arista has a 

 very short basal swelling, and the second joint is not longer than broad, the 

 cheek has longer but weaker bristles, especially behind the vibrissa, and the 

 proboscis is thinner. The thorax has on the acrostichal region in front of 

 suture three or four pairs of long, slender, moderately widely separated bristles 

 and a number of interspersed hairs; prealar bristle over half as long as the 

 one behind it, sternopleurals 2:2. Abdomen cylindrical, but little tapered 

 apically, hypopygium protuberant on venter, rounded; fourth sternite very 

 broad, with a fringe of long bristles along each lateral margin; fifth sternite 

 with large processes, which are bare except on upper, or outer, third of their 

 surfaces, the lower edge sharp, knife-like, the apices broadly rounded. Fore 

 tibia with two or three bristles, one or two antero-dorsal and one posterior; 

 fore tarsus decidedly longer than fore tibia; mid femur with a series of long 

 bristles on basal two-thirds of antero- and postero-ventral surfaces; mid 

 tibia with one antero-dorsal, two postero-dorsal and two posterior bristles; 

 hind femur with bristles as in megacephala, hind tibia with from four to five 

 bristles of irregular lengths on antero-dorsal surface, three strong bristles 

 and three or four interspersed long setulose hairs on postero-dorsal surface, 

 and two or three bristles on antero-ventral surface, the posterior surface 

 without distinct armature. Costal thorns very small; third vein ending 

 almost exactly in wing tip, fourth subparallel with third, but ending much 

 behind wing tip; outer cross-vein slightly curved. Length, 7.5 mm. 



Type. — cf ; Great Caribou Island, Labrador, July 27, 1906, 

 [Illinois]. 



Hylemyia inaequalis sp. n. 



Male. — Black, densely gray • jiruinose. Antennae black; \rd\\n fuscous, 

 slightly paler at bases. Thorax with a narrow central brown vitta, and a 

 broad poorly defined one on each side along the line of dorso-ccntrals. Abdo- 

 men with base of each dorsal sc^gment indistinctly blackened and the center 

 with a broad black vitta. Legs black. Wings very noticeably |)aler. ("alv])- 

 trae and halt(M-es yellow. 



Eyes separated by width ;i('r()ss poslciioi' ocelli; parafaciai in prolilc as 

 broad as third antennal joint at base of aulcnnae, slightly narrowed below; 

 third antennal joint slightly tapered to ajjcx; arista with longest hairs as 

 long as its basal diameter; ciheek a little over omvfourth as high as eye, the 

 lower margin with a few bristles, some of which are directed slightly upward; 



