46 COQUILLETT [43 2] 



Sitka, June 16; Yakutat, June 21 ; Virgin Bay, June 16; Saldovia, 

 Alaska, July 21 : Twenty-seven specimens. Originally described from 

 Newfoundland ; it has also been reported from New Hampshire, New 

 York, the shores of Lake Superior, and Washington. A specimen 

 in the U. S. National Museum was collected in Colorado. 



Syrphus gracilis sp. nov. 



Front polished, black, with a brassy tinge, not pruinose, its hairs 

 black; face polished yellow, abroad median vitta, the oral margin, 

 and cheeks black, the hairs black, those on upper part of occiput 

 yellowish, on the lower part white ; eyes bare, antennas black, mouth 

 parts dark brown, facial tubercle very prominent; thorax polished, 

 metallic bluish bronze, its hairs light colored; scutellum polished, 

 yellow, with a metallic bluish reflection, its hairs black; abdomen 

 polished, black, a pair of small, orbicular, yellow spots on the second 

 segment, situated in front of the middle and close to the lateral margins, 

 posterior margin of the fourth segment and front angles of the fifth, 

 yellow; legs black, apices of front femora and bases of front tibia* 

 brownish yellow ; halteres yellow, the stems brown ; wings hyaline, 

 stigma brown. Length 7 mm. A female specimen collected July 25. 



Habitat. Juneau, Alaska. 



Type. Cat. no. 5240, U. S. National Museum. 



An unusually slender species, easily recognized by the polished, not 

 pruinose front, and absence of yellow markings on the third abdominal 

 segment. 



Syrphus ribesii (Linne 1 ). 



Musca ribesii LINNE, Fauna Suec., p. 1816, 1761. 



Syrphus ribesii SCHINER, Fauna Austriaca, Dipt., I, p. 310, 1862. WILLIS- 

 TON, Synopsis N. Am. Syrphidae, p. 77, 1886. 



Metlakahtla, June 4 ; Popof Island, July 8 to 15 ; Juneau, July 25 ; 

 Fox Point, Alaska, July 28 : Nine specimens. A European species, 

 reported as occurring over the greater portion of this Continent, from 

 Washington on the north to Argentina, South America, on the south. 



Syrphus torvus Osten Sacken. 



Syrphus torvus OSTEN SACKEN, Proc. Boston Soc. Nat. Hist., p. 139, 1875. 

 WILLISTON, Synopsis N. Am. Syrphidae, p. 79, 1886. 



Juneau, June 25; Kukak Bay, July 21; Popof Island, Alaska, 

 July 8 to 10: Seven specimens. Also a European species. It has 

 been recorded as occurring in Siberia, while on this Continent its re- 

 ported range is from Greenland to Rhode Island, and in the West from 

 Washington to Colorado. The U. S. National Museum contains sev- 



