THE CANADIAN ENTOMOLOGIST. 15 



Gampsocera; larvae in decayed stems of Althea (H. Heeger). 

 ? Novum genus ; bred in California from a spider's egg-mass. 



Fam. Ephydrid.e : 



Halmopota ; larvae in salt-pits (Bouche). 



Ephydra j larvae in salt-pits (v. Heyden), in salt-pits of Kissingen 

 (Diruf). E. calif oruica ; larvae live in great numbers in water 

 of alkaline lakes in the south-western U. S. (Packard, Willis- 

 ton). E. hians; larvae in immense numbers in water of Lake 

 Tezcuco, in Mexico, and are used by the Mexican Indians as 

 food. It may also' be mentioned that the larvae of E. californica 

 are used by the Pah-Utes as food (Willis ton). 



Teichomyza fusca ; larvae live in urine (Rob. Desv.) 



Fam. Drosophilid^e : 



Aulacigaster ; larvae of only species found in wounds on elm trees 

 (L. Dufour). 



Gitona ; larvae of only species live in flower-heads of Sonchus arven- 

 sis (Loew), probably also in flower-heads of Onopordon (Sch.) 



Drosophila ; larvae usually in sour-fermented matter, fermented liquids, 

 vinegar, decayed fungi, ulcerated wounds of trees, decayed fruits 

 (Sch.) D. atnpelophila ; larvae in pomace of cider mills, in 

 pickled and preserved fruits (Lintner), bred from maggots found 

 hollowing out grapes (Forbes). D. quinaria ; bred from a 

 mass of cochineal insects (Riley & Howard). Some species 

 (Scaptomyza Hardy) are leaf-miners (Sch.) One or more 

 species mine turnip leaves in Europe and U. S. (Curtis, Garman). 



? Stegana ; breeding in hen dung (Riley ik, Howard, Ins. Life, II., 254). 

 It is perhaps doubtful whether this fly belonged to the 

 Drosophilidae. 



Fam. Ochthiphilim; : 



Leucopis ; larvae parasitic (?) on plant lice and scale insects, (?) in 

 spiders' nests (Sch.) L. bellula ; reared from cochineal insect 

 (Riley & Howard). Leucopis sp.j parasitic (?) on Rhizococcus 

 sp. on grasses in Nova Scotia (Fletcher). 



Lestophonus iceryae ; parasitic (?) on Icerya (Riley). 



