ART., 22 LITTLE KNOWN DIPTERA ALDEICH 25 



joint of arista about three times as loiig as thick, the last joint thick- 

 ened to the middle; the facial ridges with only a few hairs above 

 the vibrissae; palpi yellow. 



Thorax black with changeable stripes. In an obUque direction 

 from behind the median stripe is distinctly silvery and ends abruptly 

 at the suture. 



Chaetotaxy as in duhia, but the bristles more slender, and the 

 scutellum has on its disk one pair of smallish bristles and one pair of 

 slender, erect hairs, besides smaller hairs. 



Abdomen subshining with bronze reflections, bases of the segments 

 two, three, and four with broad but changeable pollinose bands. 

 Discal bristles somewhat mixed with large erect hairs on the middle 

 part of segments two, three, and four. 



Wings subhyaline, the third vein with from four to seven coarse 

 hairs rather far apart; calypters distinctly infuscated. 



Legs black, the front tarsi distinctly broadened on the last four 

 segments. Middle tibia with three long bristles on outer front side; 

 hind tibia with irregular, long bristles on outer hind side. 



Length, 6.6 mm. 



Described from one female collected at Forks, Clallam County, 

 Wasliington, July 1, 1920, by E. P. Van Duzee. 



Type. — In collection of California Academy of Sciences. 



Genus CUPHOCERA Macquart 



Cuphocera Macquart, Annales Soc. Ent. France, 1845, p. 267. 



CUPHOCERA AUREA, new species 



Male. — Front 0.36 and 0.34 of head width in the two specimens, 

 widening rapidly below, black with plumbeous pollen, a shining black 

 stripe on each side of ocellar triangle; inner verticals long, strong, 

 decussate; outer a httle smaller, divergent; frontal bristles about 12 

 in the row, the upper one largest, reclinate and divaricate, the lower 

 one close to eye at level of middle of second antennal joint; an extra 

 row of three or four frontals outside the lower part of the main row. 

 Ocellars present. Parafacials hairy with one or two stout bristles 

 below, 5%ellow in ground color and golden pollinose, this color begin- 

 ning just below the frontals and extending on bucca almost to back 

 of head; middle of face also yellow and golden pollinose, its lower 

 border protuberant, its ridges bare except a few hairs next to vibris- 

 sae. First and second joints of antennae deep yellow, the third 

 black except at extreme base, strongly convex in front, longer than 

 second joint; arista black, short, evenly tapering, penultimate joint 

 long. Palpi very minute, hardly visible but bearing a few distijict 

 hairs. Proboscis black, short. 



