282 The Ohio Journal of Science [Vol. XX, No. 7, 



Type and two paratypes, Seattle, Wash., May 25, 1919. 

 This species was taken by Professor Hine when on his way 

 to Alaska and is appropriately included in this paper. 



Hylemyia aliena sp. n. 



Male. Black, slightly shining, densely gray pruinose. Head 

 black, orbits, face and cheeks whitish pruinose; arista brown; palpi 

 brownish yellow; proboscis glossy black. Thorax indistinctly vittate. 

 Abdomen with a moderately broad dorsocentral black vitta which is 

 slightly dilated at anterior margin of each tergite; hypopygium glossy 

 black, with slight gray pruinescence. Legs black, hind tibis more or 

 less noticeably reddish. Wings faintly brownish, veins dark brown 

 and conspicuous. Calyptras and halteres yellowish. 



Narrowest part of frons distinctly wider than distance across post- 

 erior ocelli; orbits linear above, with bristly hairs to middle; inter- 

 frontalia with two pairs of fine bristles above middle, the upper pair 

 small; parafacial at base of antenna as wide as third antennal segment 

 and about three-fourths as wide as height of cheek, but little narrowed 

 below; cheek with a series of setulose hairs on lower margin, vibrissal 

 angle slightly produced; arista nearly bare, swollen on basal fourth, 

 second segment as long as thick; proboscis rather slender. Presutural 

 acrostichals short, two-rowed; prealar over half as long as the bristle 

 behind it. Abdomen depressed, sides subparallel; hypopygium of 

 moderate size (Fig. 25) ; fifth stemite without remarkable hairing 

 (Fig. 8). Fore tibia usually with one anterodorsal and two posterior 

 bristles; mid tibia with one anterodorsal, one posterodorsal and two 

 posterior bristles; hind femur with a rather irregular series of bristles 

 on antero ventral surface, and a postero ventral series of weaker bristles 

 which does Jiot extend to apex; hind tibia with two antero ventral, four 

 or fiA^e anterodorsal, and three or four posterodorsal bristles, and two 

 or three setulse near middle of posterior surface. Costal thorn minute; 

 penultimate section of fourth vein over two-thirds as long as ultimate; 

 apical sections of third and fourth veins subparallel. 



Length, 6 mm. 



Type and one paratype, Savonoski, Naknek Lake, Alaska, 

 June, 1919; two paratypes, same locality, July, 1919. 



Hylemyia incursa sp. n. 



Male. Similar to sericea in color, the interfrontalia and parafacial 

 usually reddish anteriorly, and the abdomen with brownish pruinescence 

 and a broad, poorly defined dorsocentral black vitta which is dilated 

 at anterior margin of each tergite. 



Arista distinctly pubescent. Presutural acrostichals fine and long, 

 one pair longer than the others, but not bristle-like; prealar over half 

 as long as the bristle behind it; posthumeral bristle not duplicated. 

 Fifth sternite as in Figure 9; hypopygium as in Figures 24 and 43. 

 Fore tibia with an anterodorsal and a posterior bristle; mid femur with 



