48 COQUILLETT [434] 



Oregon. The U. S. National Museum also contains a specimen 

 collected in Colorado. 



Sphegina infuscata Loew. 



Sphegina infuscata LOEW, Berliner Ent. Zeitsch., p. 13, 1863. WILLISTON, 

 Synopsis N. Am. Syrphidse, p. 114, 1886. 



Lowe Inlet, British Columbia, June 3; Farragut Bay, June 5 ; Sitka, 

 June 16; Yakutat, June 21; Virgin Bay, Alaska, June 26: Forty- 

 eight specimens. The abdomen of the male is sometimes of the same 

 color as that of the female. This species was originally described from 

 Sitka, and has also been reported from Oregon. TheU. S. National 

 Museum contains specimens collected in Colorado and New Hamp- 

 shire. 



Baccha obscuricornis Loew. 



Baccha obscuricornis LOEW, Berliner Ent. Zeitsch., p. 15, 1863. WILLISTON 

 Synopsis N. Am. Syrphidae, p. 123, 1886. 



Lowe Inlet, British Columbia, June 3; Sitka, Alaska, June 16: 

 Three specimens. Originally described from Sitka ; it has also been 

 reported from Oregon and New Mexico. 



Myiolepta bella Williston. 



Myiolepta bella WILLISTON, Proc. Am. Phil. Soc., p. 308, 1882. Synopsis 

 N. Am. Syrphidae, p. 128, 1886. 



Virgin Bay, Alaska : A male specimen, collected June 26. Origi- 

 nally reported from Washington and Oregon. 



Brachyopa notata Osten Sacken. 



Brachyopa notata OSTEN SACKEN, Bulletin Buffalo Soc. Nat. Hist., p. 68, 

 1875. WILLISTON, Synopsis N. Am. Syrphidae, p. 132, 1886. 



Sitka, June 16; Yakutat, June 21 ; Virgin Bay, Alaska, June 26: 

 Ten specimens. Originally described from New Hampshire, and also 

 recorded from Washington and Oregon. 



Arctophila flagrans Osten Sacken. 



Arctophila flagrans OSTEN SACKEN, Bulletin Buffalo Soc. Nat. Sci., p. 69, 

 1875. WILLISTON, Synopsis N. Am. Syrphidae, p. 158, 1886. 



Popof Island, Alaska : A single specimen, collected July 10. This 

 species was originally described from Colorado, and has been reported 

 from New Mexico. 



Volucella facialis Williston. 



Volucella facialis WILLISTON, Proc. Am. Phil. Soc., p. 316, 1882. Synopsis 

 N. Am. Syrphidae, p. 137, 1886. 



Kukak Bay, July i; Popof Island, July 13; Kadiak, July 20; 



