[43 1] DIPTERA 45 



25 : Three specimens. Also a European species, hitherto reported as 

 occurring in Canada, Colorado, and Washington. 



Syrphus arcuatus (Fallen). 



Scava arcuata FALLEN, Diptera Sueciae, Syrphidae, p. 42, 1816. 

 Syrphus arcuatus SCHINER, Fauna Austriaca, Dipt., I, p. 305, 1862. WlLLlS- 

 TON, Synopsis N. Am. Syrphidse, p. 68, 1886. 



Popof Island, July 10; Saldovia, July 21 ; Juneau, Alaska, July 25 : 

 Three specimens. A European species, heretofore reported as occur- 

 ring over the northern portion of this Continent, extending southward 

 as far as Virginia and New Mexico. 



Syrphus amalopis Osten Sacken. 



Syrphus amalopis OSTEN SACKEN, Proc. Boston Soc. Nat. Hist., p. 148, 

 1875. WILLISTON, Synopsis N. Am. Syrphidae, p. 69, 1886. 



Sitka, June 16; Yakutat, June 21 ; Virgin Bay, June 26; Kukak 

 Bay, July i ; Saldovia, July 21 ; Juneau, July 25; Fox Point, Alaska, 

 July 28 : Thirty-six specimens. Originally described from New 

 Hampshire. 



Syrphus contumax Osten Sacken. 



Syrphus contumax OSTEN SACKEN, Proc. Boston Soc. Nat. Hist., p. 148, 



1875. WILLISTON, Synopsis N. Am. Syrphidae, p. 71, 1886. 

 Syrphus bryantii JOHNSON, Entom. News, p. 17, 1898. 



Berg Bay, June 10; Muir Inlet, June 12; Kukak Bay, July i; 

 Popof Island, Alaska, July 8 to 1 1 : Thirty-five specimens. This 

 species was also originally described from New Hampshire ; the type 

 of bryantii was collected in Alaska, and Mr. Johnson has confirmed 

 the above synonymy in a recent letter. 



Syrphus mentalis Williston. 



Syrphus mentalis WILLISTON, Synopsis N. Am. Syrphidae, p. 72, 1886. 



Virgin Bay, June 26 ; Kukak Bay, Alaska, July i : Two specimens. 

 Originally described from Washington. Its occurrence in Alaska has 

 already been recorded by Mr. W. D. Hunter. 



Syrphus velutinus Williston. 



Syrphus velutinus WILLISTON, Proc. Am. Phil. Soc., p. 314, 1882. Synopsis 



N. Am. Syrphidae, p. 73, 1886. 



Fox Point, Alaska: A single specimen, captured July 28. The 

 type locality is Oregon. 



Syrphus diversipes Macquart. 



Syrphus diversipes MACQUART, Dipteres Exotiques, 4' Sup., p. 155, 1849.- 

 WILLISTON, Synopsis N. Am. Syrphidae, p. 76, 1886. 



