50 COQUILLETT [436] 



Eristalis obscurus Loew. 



Eristalis obscurus LOEW, Berliner Ent. Zeitsch., p. 171, 1865. WILLISTON, 

 Synopsis N. Am. Syrphidas, p. 175, 1886. 



Fox Point, Alaska : Three specimens, captured July 28. Origi- 

 nally described from Red River, British America. 



Helophilus lunulatus Meigen. 



Helophilus lunulatus MEIGEN, System. Besch. Eur. Zweif. Insekten, in, p. 

 370, 1822. SCHIKER, Fauna Austr., Dipt., I, p. 340, 1862. 



Kadiak, Alaska : A single specimen, collected July 20. This is a 

 European species, not heretofore reported as occurring on this Conti- 

 nent. Specimens are contained in the U. S. National Museum col- 

 lection taken at Toronto and Ottawa, Canada, by Messrs. W. Brodie 

 and W. H. Harrington. Four of these were received from Mr. Brodie 

 under the name of Helophilus canadensis Brodie ; this name appears 

 in the published Check-list of the Insects of Canada, but no descrip- 

 tion accompanies the name, nor has any ever been published so far as 

 I am aware. 



Helophilus dychei Williston. 



Helophilus dychei ' WILLISTON, Canadian Ent., p. 136, 1897. 



Berg Bay, June 10; Kadiak, July 20 ; Juneau, July 25 ; Fox Point, 

 Alaska, July 28 : Ten specimens. Originally described from Alaska. 



Criorhina armillata Osten Sacken. 



Criorhina armillata OSTEN SACKEN, Bulletin Buffalo Soc. Nat. Sci., p. 68, 

 1875. WILLISTON, Synopsis N. Am. Syrphidas, p. 213, 1886. 



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

 type locality of this species is Quebec, Canada. The U. S. National 

 Museum contains specimens from New Hampshire and Montana. 



Criorhina scitula Williston. 



Criorhina scitula WILLISTON, Proc. Am. Phil. Soc., p. 331, 1882. Synopsis 

 N. Am. Syrphidse, p. 215, 1886. 



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

 nally described from Washington. The U. S. National Museum also 

 contains a specimen from Mt. Hood, Oregon. 



Criorhina tricolor sp. nov. 



Eyes of male separated as widely as the posterior ocelli, upper half 

 of front brownish black, the lower half brownish yellow, on the sides 

 broadly yellow pruinose, face yellow, opaque, yellow pruinose, deeply 

 concave below the antennae, the lower portion strongly convex, cheeks 

 polished, brownish black, antennae brownish yellow, upper side of 



