76 THE CANADIAN ENTOMOLOGIST. 



posterior to the sternopleura, one sternopleural bristle, no other pleural 

 bristles present ; scutellum without hairs, four scutellar bristles. Wings 

 hyaline, unmarked except the extreme base and the stigma, which are 

 yellowish. Length, 8 mm. 



North Saugus, Mass. A male specimen collected by Mr. H. M. 

 Russell. Type No. 10157, U. S. National Museum. 



OMOMYIA, new genus of Phycodromidse. 



Near Coelopa, but very hairy and having the scutellum greatly 

 elongated, etc. Eyes ovate, longer than high, cheeks about as wide as 

 the eye-height, no vibrissa, face straight, v/ith a high median carina which 

 is prolonged upward between the bases of the antenna : antenna? nearly 

 as long as the face, the first joint minute, the second as wide as long, the 

 third ellipsoidal, nearly twice as long as wide, arista bare, thickened on 

 the basal fourth, the first joint as long as wide, the second nearly twice as 

 long, arista inserted near the base of the dorsal edge of the third antennal 

 joint ; front sparsely covered with long hairs, from which the usual bristles, 

 except the ocellars, are not distinctly differentiated ; occiput strongly con- 

 vex. Thorax bearing one pair of dorsocentral bristles, two supraalar, one 

 notopleural, one mesopleural, one propleural, and one sternopleural 

 bristle. Scutellum bare, nearly one-half as long as the mesonotum, its 

 sides emarginate, its apex subtruncated, two pairs of long lateral bristles. 

 Abdomen narrower than the thorax, elongate ovate, somewhat depressed. 

 Legs rather short and robust, without bristles, except on the middle tibiae, 

 which are fringed along the outer side besides bearing several at the apex, 

 a stout bristle at apex of inner side of each hind tibia, under side of tarsi 

 beset with short spines, first tarsal joint longer than any of the following 

 joints. Venation complete, auxiliary vein present, contiguous with the 

 first, except toward its apex, costa beset with short spines, sixth vein pro. 

 longed to the wing-margin, last section of the fourth vein parallel with the 

 third, first vein distinctly dilated before its apex. Type, the following 

 species : 



Omomyia hirsuta, new species — Yellow, a tridentate spot on upper 

 half of occiput, prolonged to include the ocelli, the thorax, except the 

 lateral margins and several spots on the pleura, the base of scutellum and 

 a crossband on each segment of the abdomen, black ; hind femora some- 

 times partly brown \ thorax opaque, gray pruinose, abdomen polished ; 

 hairs mixed, black and yellow ; wings hyaline, a circular brown cloud just 

 before apex of second vein. Length, 5 ram. 



Lancaster, California. Eight specimens collected in April, by Mr. A. 

 Koebele. Type No. 10158, U. S. National Museum. 



