155 



PIOPHILA Fallen 

 P. easel Lirm. The cheese-mite or "skipper." Found everj^where. 



THEMIRA Desv. , 



T. putris Limi. Montreal VIII (Be). 



Family PSILIDAE 



These are slender flies of moderate size, wings large, legs long and moderately long 

 antennae. Some of the larvae have been found in roots and galls on plants. 



LOXOCERA Meig. 



L. collaris Loew. Montreal VIII (Be). 

 L. cylindrica Say. Rigaud VII (C). 



PSILA Meig. 



P. bivittata Loew. Quebec (Osten-sacken). 



P. rosae Fabr. P. Q. (F). The "carrot rust fly." Larvae bores in carrots. 



Family DIOPSIDAE 



The "stem-eyed flies" are so-called on account of a horn-like projection from the head 

 on which the eye is placed. Only one species has been met with and it is found on leaves of 

 the skimk cabbage. 



SPHYRACEPHALA Say. 



S. brevicornis Say. Rigaud VII (C). 



Family EPHYDRIDAE 



These are all small species, and never brightly coloured and many are characterized 

 by possessing very large head and mouth. They are usually met with in swamps and meadows. 



DICHAETA Meigen 

 D. caudata Fall. Montreal IX (Be). 



NOTIPHILA Fallen 



N. scalaris Loew. ^Montreal VII (Be). 



