86 ACADEMY OF NATURAL SCIENCES 



SCENOPINUS Latr. Fabr. 



S. PALLIPES. — Thorax black, a little metallic, a small rufoua 

 tubercle on the edge near the humerus ; feet pale. 



Inhabits Pennsylvania. 



Head black, slightly metallic, with numerous short hairs, giving 

 it a granulated appearance, a glabrous polished frontal and or- 

 bital line ; thorax with numerous short hairs and with the scutel 

 appearing granulated, an obsolete rufous tubercle on the lateral 

 edge near the humerus ; wings a little dusky, nervures brown ; 

 poisers yellowish, on the superior surface dark brownish ; feet 

 pale-yellowish, tarsi dusky ; tergum black, transversely grooved, 

 polished ; venter black, with a metallic tinge. 



Length 9 less than one-fifth of an inch. 



This species is very closely allied to f^ fenestratus Fab. 



BACCHA Meig. 



B. rusciPENNls. — Bronzed ; wings dusky, with a whitish spot 

 at the extremity. 



Inhabits Pennsylvania. 



Body dark bronzed : head yellowish, above the [101] antennae 

 bronzed ; wings dark fuliginous, with a hyaline marginal on the 

 thinner margin near the tip and near the base ; feet dull testa- 

 ceous, posterior pair much the longest : abdomen elongated cyl- 

 indric, tinged with rufous. 



HELEOMYZA Fall. 



H. 5-PUNCTATA. — Light reddish-brown'; wings with a few fus- 

 cous spots; tergum fasciate with black. 



Inhabits Missouri. 



Body pale reddish-brown ; vertex tinged with fulvous ; eyes 

 dull sanguineous ; antennae reddish-brown, seta black, plumose, 

 at base separated by a slightly elevated, obtuse, abbreviated 

 carina; front yellowish-testaceous; gula and jugulum, whitish; 

 thorax with numerous black points, and two dorsal series of 

 setae; wings dusky, five blackish spots, of which two are on the 

 anastomoses and three at the tip, costal edge with short rigid 

 setae ; pectus, venter and feet whitish-testaceous, three terminal 



[Vol. III. 



