264 NORTH AMERICAN ANTHOMYIID FLIES OF GENUS PHAONIA 



Mid tibia with two posterior bristles; hind tibia with two or three antero- 

 dorsal and four or five an tero ventral bristles. Third wing- vein ending before 

 tip of wing, the wing rounded at apex. 

 Length, 7 mm. 



Originally described from Bernard Harbour, North West 

 Territory, Canada. 



Phaonia fuscisquama Van der Wulp 



Pliorhiafuscisquama ^'an der Wulp, Biol. Cent.-Amer., Diptera, i, p. 340, 1886. 



Male. — Deep black, shining, with brownish gray pruinescence which is 

 most dense on dorsum of abdomen. Thorax not vittate. Abdomen with a 

 series of elongate black dorsocentral spots forming an interrupted vitta. 

 Legs black. Wings slightly infuscated, veins black. Calj-ptrae fuscous. 

 Knobs of halteres yellow. 



Eyes bare, separated by not more than width of anterior ocellus; parafacial 

 at base of antennae narrower than third antennal segment; becoming linear 

 below; cheek about as high as width of third antennal segment, profile as in 

 figure 10; arista with very short pubescence. Thorax with the presutural 

 acrostichals long, but not in differentiated pairs; prealar very short; postsutural 

 dorsccentrals four; sternopleurals 1:1; basal pair of scutellars much shorter 

 than apical pair. Abdomen narrowly ovate, basal sternite bare. Fore tibia 

 unarmed at middle, shorter than fore tarsus; mid femur without strong ventral 

 bristles; mid tibia with a posterodorsal bristle about one-third from apex; 

 hind tibia with one anterodorsal and one anteroventral bristle. Auxiliary 

 vein approaching costa much more gradually than in the other species, first 

 posterior cell narrowed apically. 



Length, 5 mm. 



Described from a paratype supplied by the British Museum, 

 from Omilteme, Guerrero, Mexico, (H. H. Smith). 



This species has the habitus of a Hydrotaea and similar wing 

 venation, but the fore femora are not excavated and armed with 

 a spine on ventral surface before apex as in that genus. 



Phaonia morrisoni new species 



Male. — Similar to the preceding species in color. Differs from it in having 

 the calyptrae yellow, and the abdomen gray pruinescent and with an indistintc 

 dorsocentral vitta. 



Eyes pubescent; profile similar to that of preceding species. The chae- 

 totaxy of the thorax is as in that species, as is the bristling of the legs except 

 the hind femora. In addition to the distinction mentioned in the key the 

 type has no bristle on the anteroventral surface of hind tibia, but in the 

 paratype there is a bristle on that surface on one tibia. The first posterior 

 wing cell is not narrowed at apex. 



Length, 4 to 5 mm. 



