192 



PROCEEDINGS ENTOMOLOGICAL SOCIETY 



The female differs as follows: in the very much shorter antennae, length 

 of second aristal joint (figs. 1, la, Ib), shape and extent of facial depression, 

 extent of thickening of arista (figs. 1, la, Ib), presence of orbital bristles, 

 absence of discal and sometimes marginal bristles of abdominal segments. 



These facts show how inadvisable is the practice of proposing 

 genera upon scanty material representing but one sex. 



Mr. Daecke, to whom I am indebted for specimens and notes, 

 states the flies were taken in large numbers from the trunk of 



Fig. 1. Mauromyia pulla Coq. 



1. Head of male lateral view. la. Antenna of female showing elongate 

 second aristal joint. Ib. Antenna of another female showing second aristal 

 joint abbreviated. 2. Wing of male showing bend of fourth vein destitute 

 of appendage. 3. Wing of another specimen of same sex with the bend 

 appendiculate and the vein beyond bent inward. 



4. Head of male Paradmontia brevis Coq. 



a tree about which they were running with the prominent antennae 

 held in a porrect position. Mr. Chas. T. Greene has also loaned 

 specimens, both male and female, which have been of much value 

 in the study of the species. These were collected at Lehigh Gap, 

 Penn. 



Some doubt has heretofore existed regarding the distinctness 



vo species, Mauromyia pulla Coq. and Paradmontia breri* 



.hough the former has a bare and the latter a bristly 



tudinal vein. This uncertainty is now happily elim'i- 



