428 COQUILLETT 



Saldovia, July 21; Fox Point, Alaska, July 28: Seventy-two speci- 

 rnens, of both sexes. Originally described from Alaska, the two sexes 

 having been described as separate species. 



Chilosia pulchripes Loew. 



'Chilosia pulchripes Loew, Verhandlungen Zool.-Bot. Vereins. p. 19, 1857. — 

 SCHINER, Fauna Austr., Dipt., i, p, 281, 1862. — Becker, Revision 

 Gatt. Chilosia, p. 372, 1894. 



Kukak Bay, July i and 4; Saldovia, Alaska, July 21 : Nine speci- 

 mens. A European species, not heretofore reported as occurring on 

 this Continent. 

 Melanostoma mellinum (Linne). 



Musca inellinu»i Linne;, Fauna Suae, p. 1820, 1761. 



Melanostoma 7nellininn Schiner, Fauna Austriaca, Dipt., i, p. 291, 1862. — 

 WiLLiSTON, Synopsis N. Am. Syrphidae, p. 49, 1886. 



Metlakahtia, June 4; Berg Bay, June 10; Sitka, June 16; Yakutat, 

 June 21 ; Virgin Bay, June 26; Kukak Bay, July i ; Popof Island, 

 July 8 to 15 ; Kadiak, July 20; Saldovia, July 21 ; Juneau, July 25 ; 

 Fox Point, Alaska, July 28: One hundred and fifty-one specimens. 

 This is also a European species reported as occurring on this Con- 

 tinent from Canada and Alaska, on the north, to Argentina, South 

 America, on the south. 



Melanostoma trichopus Thomson. 



Syrphus inchoptts TnOMSOti, Kongliga Sven. Freg. Eng. Resa, p. 502, 1868. 



Metlakahtia, June 4; Kukak. Bay, July i; Popof Island, Alaska, 



July 8 and 9. Four specimens. Originall}' described from California. 



Platychirus peltatus (Meigen). 



Syrp/tus pel/a/us Mkigeu, Syst. Besch. Eur. Zweif. Ins., iii, p. 334, 1822. 

 Plal_yc/iirus pellafKs ScHiNKK, Fauna Aust., Diptera, i, p. 295,1862. — Willis- 

 ton, Synopsis N. Am. Syrphidae, p. 58, 1886. 



Lowe Inlet, British Columbia, June 3; Sitka, June 16; Kukak 

 Bay, July i ; Popof Island, July 8 to 14; Fox Point, Alaska, July 28 : 

 Nineteen specimens. A European species heretofore reported as oc- 

 curring in this country from New Hampshire and Pennsylvania to 

 Alaska and Colorado. 

 Platychirus tenebrosussp. nov. 



Male: Head black, its hairs black, those on lower part of occiput 

 whitish, sides of frontal triangle bronze green, head at antci'ior oral 

 margin noticeably shorter than at base of antenna!, face polished, the 

 tubercle very small ; antennae black, the tiiird joint dark brown, slightly 

 longer than wide, mouth parts polished black; thorax and scutellum 



