44 ACADEMY OF NATURAL SCIENCES 



Head tinged with rufous ; eyes black ; thorax a little hairy, 

 immaculate; feet whitish; tarsi dusky; wings pellucid, nervures 

 pale brown, a fuscous spot on the connecting nervures ; abdomen 

 fusiform, somewhat compressed, second, third and fourth seg- 

 ments, particularly the former, reddish-brown above. 



Length three-twentieths of an inch. 



This belongs to Meigen's first division of the genus. 



CAMPYLOMYZA Meig. Wied. 



C. SCUTELLATA. — Black, scutel testaceous ; feet yellowish ; 

 wings hyaline, nervures at the base, pale-yellowish ; poisers yel- 

 lowish. 



Inhabits Missouri. 



Length nearly one-twentieth of an inch. 



ERIOPTERA Meig. 



E. CALIPTERA. — Wings fuscous spotted with white : interme- 

 diate and posterior thighs biannulate with black. 



Inhabits Missouri. 



Body pale yellowish ; thorax with two fuscous lines above, and 

 one on each side before the wings; wings dark brown, about thir- 

 teen spots arranged along the margins, and numerous somewhat 

 smaller ones on the disk, white; nervures hairy; anterior [18] 

 thighs with a blackish line near the tip; intermediate and posterior 

 thighs with an annulus on the middle and another near the tip, 

 blackish; abdomen tinged with brownish, a darker dorsal line and 

 longitudinal incisures. 



Length more than three-twentieths of an inch. 



[Wiedemann has altered this to E. caloptera. — Sacken.] 



CTENOPHORA Meig. 



1. C. FULIGINOSA. — Dusky, wings spotted with white; abdo- 

 men lineate with yellow. 



Inhabits Missouri. 



Body dark brown ; thorax lineate with yellowish before ; wings 

 fuliginous, with about three white spots on the anterior margin, 

 and a transverse oblique one on the disk attaining the thinner 

 margin ; feet short, pale testaceous, tips of the thighs and of the 

 tibia and tarsi blackish ; tergum fuscous, with two dilated yellow 



[Vol. III. 



