288 THE CANADIAN ENTOMOLOGIST 



broad, facialia flared outward, a weak median carina present. 

 Parafacials more on edge in male than in female. Second antennal 

 joint short in both sexes; third joint of male well broadened and 

 about six times second in length, that of female no broader than 

 distal end of second and not over four times lehgth of second. 

 Arista thickened on basal three-fifths Male without proclinate 

 fronto-orbitals, but with three reclinate ones in triangle, of which 

 the outer one corresponds to a proclinate one in female. Female 

 with two proclinate and two reclinate. Both sexes with the 

 frontal row doubled anteriorly, the outer row weak. Frontals 

 descending quite to insertion of arista. Frontalia occupying fully 

 one-third of frontal width in female, broad throughout; those of 

 male narrowed anteriorly. Cheeks about one-half eye-height in 

 both sexes. Epistoma cut off, vibrissae practically on oral margin. 

 Eyes quite thickly hairy in both sexes. Antenna? as long as face. 

 Proboscis very short and fleshy, palpi slightly thickened apically. 

 Scutellum without apical decussate pair of bristles; with three 

 laterals, of which the posterior is longest ; and a closely-approximated 

 discal pair. Abdomen ovate in both sexes; macrochaetae marginal 

 and discal, including median marginal pair on first segment. Claws 

 of male quite elongate, about as long as last tarsal joint; these of 

 female a little shorter. Hind cross-\ein much nearer to cubitus 

 than to small cross-vein Belongs in the Admontia group. May 

 be distinguished from Admontia by the bare parafacials and short 

 second aristal joint. 



Pseudodidyma pullula new species. 



Length of body 5.25 mm.; of wing 5 mm. One female, 

 Farragut Bay, Alaska, June 1, 1899 (T. Kincaid). This is the 

 specimen determined by Coquillett as Didyma pidlida Wulp, 

 Dipt. Harriman Alaska Exped., 438 (sep. pag. 52). 



Blackish, cinereous pollinose. Whole face and anterior edge 

 of parafrontals silvery-ashy, cheeks somewhat less so. Palpi 

 fulvous. Frontalia brown. Antennae blackish or brownish. Para- 

 frontals blackish, thinly pollinose; thorax and scutellum same. 

 Four vittae on mesoscutum, middle ones narrow, outer ones hea^"ier 

 and broken. Abdomen lilackish, not shining, with a submar- 

 morate ashy- pollinose efl^ect, the pollen for most part of same 



