APPENDIX. 357 



Closely allied to the Tnaculipennis, Hgg. I have not 

 seen the male. Wiedemann informs me that my Culex 

 punctipennis is a true Anopheles, an observation which 

 I have found to be correct. I described that insect in the 

 year 1819, before any account of that new genus had 

 reached this country, otherwise I certainly should have 

 adopted it. 



LASIOPTERA, Meigen. 



L. ventralis. Body blackish-brown ; antennse 18-joint- 

 ed, hairy, joints subglobular, rather transverse, and placed 

 close to each other, basal joint whitish ; thorax and terguni 

 immaculate ; feet whitish, exterior side of the tibiae black- 

 ish ; tarsi blackish, first joint very short ; venter whitish 

 in the middle ; wings with a narrow, blackish, costal mar- 

 gin, which is gradually narrowed to the tip. 



9 Length rather more than one-twentieth of an inch. 



I caught this species in the garden of the University of 

 Pennsylvania, early in August. 



CECIDOMYIA, Latr. 



C. ornata. Carneous ; wings spotted. 



Inhabits Pennsylvania. 



Body varies in colour from a very pale flesh colour to 

 a deep red ; antennse and feet whitish ; loings with five or 

 six dusky spots occasioned by the greater density of the 

 hair of the surface in those parts. 



Length to the tip of the wings nearly one-tenth of an 

 inch. 



This is most probably the prettiest species of the genus j 



Vol. II. 46 



