Vol. IX] MALLOCH— FLIES (DIPTERA) FROM CALIFORNIA 303 



and a long posterior bristle, the four apical bristles long ; mid- 

 tibia with two antero- and two postero-dorsal bristles; hind 

 femur with fine hairs at base ventrally, the antero-ventral 

 surface with about five long strong widely placed bristles, the 

 postero-ventral surface with fewer bristles which do not ex- 

 tend to apex: hind tibia with one antero-ventral, two antero- 

 dorsal, and two postero-dorsal bristles, tip with four long and 

 two short bristles. Costal thorn long. 



Female. — Similar to the male. The frons is one-third of 

 the head-width, the abdomen is conical, the femoral basal 

 bristles are shorter and stronger, and the tibial bristles 

 stronger and usually there is an additional one basad of those 

 present in the male. 



Length, 5-5.5 mm. 



Type, male, No. 529, C. A. S., Huntington Lake, Calif., alt. 

 7000 feet, July 9, 1919; E. P. Van Duzee, coll.; allotype, 

 female. No. 530, C. A. S., and one paratype, topotypical, same 

 locality; two female paratypes, same locality, July 10, 1919. 



This species is much smaller than D. Havitibia Johannsen, 

 the only other species of the genus described from this coun- 

 try, and differs from it in having the legs entirely black and 

 with different bristling. 



6. Coenosia alticola, new species 



Male. — Black, distinctly shining, with gray pruinescence on 

 body, that on head whitish and dense, on thorax and abdomen 

 darker and not so dense. Antennae and palpi black; thorax 

 with three brown pollinose vittse; scutellum dorsally colored 

 as vittse; abdomen with a pair of brown pollinose spots on 

 each of the basal four tergites. Legs black, the femora shin- 

 ing, pale at extreme apices ; tibiae yellowish testaceous ; wings 

 clear, whitish basally, veins pale brown ; calyptrse and halteres 

 whitish yellow. 



Frons one-third of the head-width, slightly widened an- 

 teriorly ; each orbit with four strong bristles and a few short 

 hairs; ocellar bristles long; third antennal joint narrow, about 

 twice as long as second, extending four-fifths of the distance 

 to mouth-margin; arista pubescent; parafacial narrower than 



