ALASKA INSECTS 



MenyantheS) the principal visitors were Eristalis occidentalis 

 Will., J^eoascia globosa L., and Melanostoma nielli num (L.). 

 At Ncphrophyllidium the only insect taken was Melanostoma 

 mellinum (L.), while at Sieversia a number of Muscidae were 

 captured, as well as one species of Syrphidce {^Melanostoma 

 trichophus Thomson). In the spathes of Lysichiton, a beetle 

 (Donacia fcmoralis Kby.) was found at work devouring pollen, 

 and here also occurred the fly, Syrphus ribesii L. 



Sweeping brought to light a number of Diptera hidden in the 

 grass and herbage, including five Tipulidre, of w r hich two were 



9KXJP- 



?fe^ 





FIG. I. PiETLAKATLA. 



new ( Tifaila strigata Coq. and Tipula gclida Coq.) ; three 

 species of Empidse, all of which were new (Empis fumida Coq., 

 Rhamphomyia glauca Coq., and Rhamphomyia anthracodes 

 Coq.) ; and two species of Dolichopodida^, Dolichopus longi- 

 manus Loew being especially abundant. Of the Muscidas, the 

 most interesting were Orthochceta pilosa (Zett.), a European 

 species not previously known from America, and CEdoparea 

 glauca Coq., a new species of Sciomyzidse. 



With the exception of water beetles, the Coleoptera do not 

 thrive in very marshy places, only six species being found, and 

 these of an uninteresting character, except Stenus umbratilis 

 Casey, which was new to Alaska, although known from British 

 Columbia. The same may be said of the Heteroptera, since 



