Diptera 71 < 



apex of abdomen, the length of wing equal to that of entire insect; costa with 

 short black setulae, the costal spine not differentiated; outer cross-vein curved; 

 last section of fourth vein twice as long as preceding section. 



Length, 8 mm. 



Type locality: Bernard harbour, Dolphin and Union strait, Northwest 

 Territories, June, 1915-16 (F. Johansen). 



Alliopsis, sp. 



FEMALE. Similar in colour to obesa. 



Frons at narrowest part about one-eighth the width of head, tin- orbit- 

 linear and about one-fifth as wide as interfrontalia, bristles as in preceding 

 profile as PI. X, fig. 32, Thorax much less conspicuously haired than in obesa, 

 the dorso-centrals stronger and well differentiated; presutural acrostichal> 

 irregularly four-rowed, presutural bristle single; prealar as in obesa, nearly as 

 long as the bristle behind it; scutellum with a differentiated discal pair of bri>t !> 

 in addition to the marginals. Abdominal hairs very long on lateral margins of 

 segments and on apical two, short on disc, the contrast more striking than in 

 obesa', apical genital segment without thorns. Legs less hairy than in obesa, the 

 bristles on tibiae strong and distinct; fore tibiae with three long bristles, one on the 

 anterior dorsal surface and two on the posterior; mid tibiae with three antero- 

 dorsal, four to five postero-dorsal, and three postero-ventral bristles; hind 

 femora as in obesa, but hind tibiae with four to five long bristles on the basal half 

 of posterior surface in addition to those on the other surfaces, the latter stronger 

 than in obesa. Wings as in obesa, but the costal setulae are longer, the costal spine 

 is distinct, and the outer cross-vein is straight. 



Length, 7 5 mm. 



Locality: Camden bay, Alaska, June, 1914 (F. Johansen). 



It is possible that the two foregoing forms represent only one species. 



The genus Alliopsis was erected for the reception of the European arctic 

 species glacialis Zetterstedt, and is closely allied to Lasiops Meigen, both having 

 the eyes very distinctly hairy, but it may be separated from that genus in the 

 male by much more widely separated eyes, those of Lasiops being subcontiguous, 

 and by the very broad abdomen. The female of Lasiops has the frons similar to 

 that of Phorbia, whereas that of Alliopsis is not much wider in the male and all 

 the orbital bristles are directed slightly inward, none directed forward. 



Egle Robineau-Desvoidy. 



This genus contains several species that have been placed in Anthomyia by 

 most authors. From the type of the latter Egle differs at least the species 

 known to me in having the prothorax bare below and in front of the spiracle. 



One species is present in this collection. 



Egle radicum (Linne). 

 Musca radicum Linne, Fauna Suec., 2d ed., p. 454, 1756. 



Six specimens, with data as follows: .Nome, Alaska, August 21, 1916, two 

 specimens, and August 24-25, 1916, three specimens; and Teller, Alaska, July 

 29, 1913 (F. Johansen). 



This is a European species which occurs throughout North Amo] 

 has previously been recorded from Alaska. 



Schnabl and Dziedzicki have erected the genus Paregle for the reception o 

 the above species and several others, but I do not think the separation warranted. 



