102 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 51 



Length, 10 mm. Blackish, gray pollinose. Entire face and front, 

 even including cheeks and orbit, deep golden pollinose. Frontalia 

 quite black, nearly as wide as one parafrontal. Antennae blackish. 

 Palpi reddish yellow. Thorax and scutellum very thinly pollinose, 

 humeri thickly so. Abdomen quite uniformly pollinose except first 

 segment, thickly bristly and hairy. Legs entirely black, femora 

 pollinose on under side. Claws long and black, pulvilli smoky. 

 Tegulae whitish, with narrow yellowish edge. 



Type— Cat. No. 11,686, U. S. N. M. 



Paradexodes albifacies, sp. nov. 



One male, White Mountains, New Hampshire, Morrison. This 

 specimen is figured in Dr. Howard's Insect Book, pi. 22, fig. 7, as 

 Hypostcna variabilis Coquillett, but is not congeneric with the type 

 of that species. 



Length, 9.5 mm. Face and front, cheeks and orbits silvery white. 

 Frontalia reddish brown, wider than one parafrontal. Antennae 

 reddish brown. Palpi yellow. Thorax, scutellum. and abdomen 

 shining black, very thinly bluish silvery pollinose, most thickly so on 

 humeri and bases of last three abdominal segments. Legs blackish 

 brown, femora silvery beneath, pulvilli yellowish white, claws pale 

 reddish brown. Tegulae white, with narrow yellowish edge. 



Type— Cat. No. 11,687, U. S. N. M. 



Genus Ceromasia Rondani 

 Ceromasia aurifrons, sp. nov. 



Three females and one male. New Hampshire (2 females and the 

 male from Canobie Lake, Dimmock). 



Length, 7.5 to 10 mm. Differs from the European C. florum 

 Meigen (determined by Brauer and von Bergenstamm) by having 

 whole of parafrontals, parafacials, and orbits deep golden in both 

 sexes, even the cheeks showing golden in fresh specimens ; the pollen 

 of thorax and abdomen whitish gray, without the brassy tinge of 

 florum ; anal segment in both sexes with a noticeable tinge of golden, 

 and scutellum testaceous only on apical half. 



Type.— Cat. No. 11,649, U. S. N. M. (female). 



Two males of this species were bred at the Gipsy Moth Parasite 

 Laboratory, North Saugus, Massachusetts, by E. S. G. Titus, from 

 unidentified lepidopterous larvae. 



Ceromasia auricaudata, sp. nov. 



Two females and one male, Harrison, Idaho (male and female), 

 and Pullman, Washington (female, July 16). 



