BULLETIN No, 180. 



THE MYCETOPHILID^ OF NORTH AMERICA. 



Part H.* 



THE SCIOPHILIN^. 

 O. A. JOHANNSEN. 



The classification which I adopted in Genera Insectormn is 

 followed in this paper ; the only exception being that Neoem- 

 pheria is here restored to generic rank. To avoid confusion it 

 may be well to state that Lasiosoma Winnertz of earlier writers 

 is replaced by Sciophila (Meigen, part, not Winnertz) and Scio- 

 phila (in sensu Winnertz) by Mycomya Rondani. In the study 

 of the members of this family alcoholic material is much to be 

 preferred to pinned specimens. Slide mounts are also very 

 useful though the ocelli and the parts of the hypopygium are 

 not so readily discernible. 



The subfamily Sciophilincs is a compact and easily recog- 

 nizable group characterized by the presence of a small closed 

 cell (RJ not far from the middle of the wing (figs. 83-106). 

 The M-Cu crossvein is absent, R0+3 is distinct, short, usually 

 nearly transverse, crossvein-like, and bounds distally the small 

 cell R^. The ocelli, two or three in number, are remote from 

 the eye margin, except in the genus Eudicrana. The hypopygia 

 are complex, diverse in structure and frequently small and 

 inconspicuous. 



Habits and Early Stages. 

 Comparatively little is known of the habits of the Sciophilince. 

 In the paper on "Characters of the larvae of Mycetophilidse" 

 by Osten Sacken, is given all that is known concerning the early 



*Papers from the Maine Agricultural Experiment, Entomology No. 

 42. Part I was published in Bulletin No. 172. Where the types of the 

 new species are to be found will be stated in Part III, now in prepara- 

 lion. 



