274 THE CANADIAN ENTOMOLOGIST 



THREE NEW CANADIAN ANTHOMYIID^ (DIPTERA). 



BY J. R. MALLOCH, URBAN A, ILL. 



The three species described in this paper were submitted to me for identi- 

 fication, and in order to include them in synopses which are ready for the press, 

 they are now described in full. 



The generic name Aricia R.D., is preoccupied and the next available one 

 Helina R.D., is used in this paper. 



Helina fletcheri, sp. n. 



Male. — Black, so densely covered with gray pruinescence as to appear 

 opaque gray. Orbits, face and cheeks with silvery pruinescence, antennae 

 and palpi black. Thorax without vittse. Abdomen with a faint dark dorso- 

 central vitta, and a pair of small brown spots on segment 2 and another on 

 segment 3. Legs black. Wings clear, veins pale, yellow at bases. Calyptrx 

 and halteres pale yellow. 



Eyes bare, separated by about 3 times the width across posterior ocelli; 

 interfrontalia at its narrowest part a little wider than either orbit; each orbit 

 with 3 or 4 strong bristles and one or two weak hairs parafacial at base of 

 antennae about as wide as third antennal segment, a little narrowed below; 

 cheek not over twice as high as width of parafacial, with a series of bristles 

 along lower margin, 2 or 3 of which, below anterior margin of eye, are upwardly 

 curved a bristle above vibrissa; longest hairs on arista a little shorter than 

 width of third antennal segment. Thorax without strong presutural acrostichals 

 or prealar bristle; postsutural dorso- centrals 3; sternopleurals 3, in a nearly 

 equilateral triangle. Abdomen cylindrical, slightly tapered behind; tergites 3 

 and 4 each with transverse median and apical bristles; hypopygium large but 

 not protuberant, fifth sternite with a rather wide, deep, wedge-shaped posterior 

 excision, a few long bristles on each lateral extension. Fore tibia with or with- 

 out a median bristle, only the dorsal apical bristle strong; fore tarsus about 

 equal in length to fore tibia; all pulvilli longer than apical tarsal segment mid 

 femur with a complete series of long, strong bristles on postero- ventral surface, 

 the antero- ventral surface bare; mid tibia with 1 weak antero-dorsal and 2 or 3 

 posterior bristles; hind femur with a series of long bristles on postero- ventral 

 surface and another on apical half of antero- ventral ; hind tibia with 2 or 3 

 short bristles on antero- ventral and postero-dorsal surfaces and 2 longer bristles 

 on antero-dorsal, the apical antero-dorsal bristle long. Costal thorn small, 

 outer cross- vein straight; veins 3 and 4 divergent apically; last section of fourth 

 vein over twice as long as the preceding. 



Length 5 mm. 



Type. — ^Radisson, Sask., July 30, 1907, (J. Fletcher), in the Canadian' 

 National Collection. 



This species has the appearance of a Coenosia. It differs from any other 

 North American species known to me in having the eyes widely separated, the 

 femora very strongly bristled and the postsutural bristles 3 in number. 



Hylemyia pedestris, sp. n. 



Male. — Black, slightly shining, densely gray pruinescent. Head black, 

 orbits, face, and cheeks with white pruinescence; palpi largely yellowish basally. 

 Thorax with 5 black vittae — a narrow median, two narrow submedian, and two 



December, 1919 



