62 COOUILLETT 



suture, the lateral margins in front of wings and the pleura, gray pru- 

 inose, three pairs of postsutural dorsocentral bristles; abdomen de- 

 pressed, elongate-ellipsoidal, almost one and one-half times as long as 

 broad, subopaque, dark gray pruinose, a broad dorsal vitta and very 

 narrow bases of the segments, black ; hypopygium only slightly pro- 

 jecting, opaque, gray pruinose ; venter, especially along the sides, 

 densely covered with rather long hairs ; middle femora covered on the 

 anterior-under side with short bristles, on the posterior-under side with 

 long bristly hairs, becoming shorter toward apices of the femora; 

 middle tibiae each bearing a bristle at three-fourths the length of the 

 outer-anterior side, three on lower half of outer-posterior side and two 

 below middle of inner-posterior side ; hind femora on the anterior- 

 under side ciliate with long bristles and hairs, the posterior-under side 

 ciliate with shorter bristles which are much shorter on the apical third ; 

 hind tibiae each bearing a bristle below the middle of the inner-anterior 

 side, the outer-anterior side ciliate with about nine rather short bristles 

 on about the median three-fifths, the outer-posterior side ciliate with 

 about three long and three shorter bristles on about the median third ; 

 wings hyaline, costal vein pubescent, third and fourth veins slightly 

 converging, hind crossvein very sinuate, calypteres white; length, 6 

 mm. A male specimen, collected July 28. 



Habitat. Juneau, Alaska. 



Type. Cat. no. 5247, U. S. National Museum. 



Hylemyia alcathoe (Walker). 



Anthomyia alcatha WALKER, List Dipt. Ins. British Museum, iv, p. 937, 1849. 

 Hylemyia flavicaudata BIGOT, Annales Soc. Ent. France, p. 299, 1884. 

 Hylemyia strigata STEIN, Berliner Ent. Zeitsch., p. 211, 1898. 



Sitka, Alaska: Nine specimens, collected June 16. Originally 

 described from Nova Scotia, and has been recorded from Idaho and 

 Washington. The U. S. National Museum also possesses specimens 

 collected at Franconia, New Hampshire, by Mrs. Annie T. Slosson. 



Hylemyia variata (Fallen). 



Musca variata FALLEN, Dipt. Sueci.ne, Muscidne, p. 59, 1820. SCHINER, 

 Fauna Austriaca, Dipt., I, p. 628, 1862. 



Popof Island, Alaska : Six specimens, collected July S to 12. A 

 European species, first reported from this country about two years ago 

 by Mr. P. Stein, who recorded it as occurring from Canada to Vir- 

 ginia, westward to Idaho. 



Hylemyia marginata Stein. 



Hylemyia marginata STEIN, Berliner Ent. Zeitsch., p. 221, 1898. 



