MOSLEY : ON YORKSHIRE DIPTERA IN 1877. 2r 



sweeping net for sweeping grass and other herbage in woods, &c. 

 The cyanide bottle will do very well for killing, and about 

 No. 10 pins will be suitable for a great many of the species. My 

 breeding cages I make out of old medicine bottles by cutting 

 them in two with a red-hot poker, and then pasting a strip of 

 paper several times round the top part, letting it hang over the 

 cut edge, so that when it is dry it sHps on the bottom half and 

 forms a lid. This kind of cage does very well for the leaf-miners, 

 both dipterous and lepidopterous. After killing the specimens, 

 I pin them and spread out their legs on a sheet of cork, leaving 

 their wings in a natural position, but so that they do not hide 

 the venation or the body; when dry, I put upon the pin a square 

 or circular bit of paper, large enough for the feet to rest upon, 

 bearing the date and place of capture and the captor's initials; the 

 specimen is then ready for the cabinet. 



LIST OF SPECIES TAKEN IN YORKSHIRE IN 1877. 



Trixa osstroides. Huddersfield. 



Sarcophaga carnaria, L. Not uncommon in the woods: 

 Huddersfield. 



Onesia vespillo. This I believe is common, but my know- 

 ledge at present will not allow me to do more than enumerate the 

 species : Huddersfield. 



Musca vomitoria, L. The blue-bottle fly. Huddersfield. 



M. domestica, L. House fly. Huddersfield. 



M. corvina, F. Huddersfield. 



Lucilia csesar, Z. Green-bottle fly. Huddersfield. 



L. cornicina, F. Huddersfield. 



AnthomyiacaniculariSjZ. Common, bred: Huddersfield. 



A. mitis, Meig. This I suppose is the one that mines the 

 dock leaves so commonly, but I have not yet bred it : Huddersfield. 



A. Jacob^ae. Larvas found at Thornhill but not bred. 



Dryomyza flaveola, F. Common : Huddersfield. 



Syrphus Ribesii,Z. Agreat many of this genus are common 



