DIPTERA 



399 



Molophilus colonus Bergroth. 



Molophilus coloniis Bergroth, Wiener Entom. Zeitung, p. 195, 1888. 



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

 species was originally described from Alaska. 



Molophilus falcatus Bergroth. 



Molophilus falcatiis Bergroth, Wiener Entom. Zeitung, p. 196, 1888. 



Metlakahtla, June 4; Yakutat, Alaska, June 21 : Two males and 

 two females. Originally described from Alaska. 



Molophilus paulus Bergroth. 



Molophilus patdus Bergroth, Wiener Entom. Zeitung, p. 196, 1888. 



Metlakahtla, June 4; Sitka, June 16; Popof Island, July 9; 

 Kadiak, Alaska, July 20 : Two males and two females. Originally 

 described from Alaska. 



Helobia hybrida (Meigen). 



Limonia hybrida Meigen, Klass. Besch. Eur. Zwief. Ins., p. 57, 1804. 

 Limtiobia pufictipennis M.KiGKi'i, Sys. Besch. Eur. Zweif. Ins.,i, p. 147, 1818. 

 Symplecta punctipennis Osten Sacken, Monographs Diptera N. Amer. , iv, 

 p. 171, 1869. 



Saldovia, Alaska: A female specimen, collected July 21. This 

 European species occurs over the greater portion of the United States. 



Limnophila unica Osten Sacken. 



Limnophila unica Osten Sacken, Monographs Diptera N. Amer., iv, p. 

 205, 1869. 



Sitka, June 16; Yakutat, Alaska, June 21 : Two male specimens. 

 Originally described from New Hampshire. 



Limnophila indistincta Doane. 



Limnophila indistincta Doane, Journal N. Y. Ent. Soc, Sept., p. 191, 1900. 



Yakutat, Alaska: A male specimen, collected June 21. This 

 species was originally described from Collins, Idaho. 



Tricyphona vitripennis (Doane) . 



Amalopis vitripennis Doane, Journal N. Y. Ent. Soc, Sept., p. 195, 1900. 



Lowe Inlet, British Columbia: Two male specimens, collected 

 June 3. Originally described from Washington. 



Tricyphona disphana (Doane) . 



Amalopis disphana Doane, Journal N. Y. Ent, Soc, Sept., p. 195, 1900. 



Yakutat, June 10; Berg Bay, June 21 ; Popof Island, Alaska, July 

 15 : Three male specimens. Also originally described from Wash- 

 ingfton. 



