Vol. IX] MALLOCH— FLIES (DIPTERA) FROM CALIFORXIA 305 



distance from mouth-margin ; parafacial linear ; cheek higher 

 than width of third antennal joint ; arista nearly bare. Thorax 

 and bristles of legs as in preceding species : the hind tibia 

 with a small bristle at middle on postero-dorsal surface. 



Type, a female, 4.5 mm. long. No. 533, C. A. S.. and one 

 paratype, Huntington Lake, Calif., alt. 7000 feet, July 9, 

 1919; E. P. Van Duzee, collector. 



This species has the calyptr?e smaller than in most species 

 of Ccenosia, the lower one scarcely projecting, and the hind 

 tibia has a small bristle on the postero-dorsal surface. It may 

 require a new genus for its reception, but until the male is 

 found it may remain in Coenosia. 



8. Macateeia atra, new species 



Male. — Black, slightly shining. Head with the interfron- 

 talia, parafacials, and a portion of the cheeks reddish; palpi 

 fuscous, paler basally. Thorax greasy in type but with indi- 

 cations of three vittas; abdomen gray pruinescent, when 

 viewed at certain angles with a broad indefinite black dorso- 

 central vitta; legs black; wings clear, veins brown; calyptras 

 and halteres yellowish. 



Eyes separated by one-third of the head-width; each orbit 

 about one-half as wide as interfrontalia, with about six in- 

 wardly directed slender bristles on anterior half and three or 

 four outwardly directed on posterior half ; interfrontalia with- 

 out cruciate bristles ; arista thickened on basal third, pubescent ; 

 parafacial not as wide as third antennal joint, and as wide as 

 height of cheek. Thorax with two pairs of presutural acros- 

 tichals; prealar over half as long as the bristle behind it; 

 sternopleurals 2 :2, the lower anterior one weak. Abdomen 

 short and broad, fourth tergite longest; hypopygium large; 

 fifth sternite with two long narrow processes which are not 

 remarkably bristled. Legs stout, the femora noticeably thicker 

 than is usual in the family; fore tibia with a weak preapical 

 dorsal bristle ; mid-femur with a few short bristles on antero- 

 and postero-ventral surfaces ; mid-tibia with a short stout 

 bristle beyond middle on antero- ventral surface, and three or 

 four weak posterior bristles ; hind femur with a complete 

 series of weak antero-ventral bristles, and one or two slender 



