HOW TO COLLECT DIPTERA 

 (TWO-WINGED ELIES), 



with: notes on the habits of the perfect 

 insects and larv^. 



List of Articles Kequired. 



An eiitomologist's collecting -net. — This can be obtained from any 

 dealer in natural-history apparatus. Any net used for collecting 

 butterflies will do for Diptera ; but, on the whole, perhaps an ordinary 

 nmbrella-net will be found the most serviceable. One or two spare 

 net-bags should be taken in case the one in use gets torn. 



Two dozen glass-bottomeJ cardboard pill-boxes (assorted sizes, up to 

 2| inches in diameter, packed in nests one inside another). {See p. 51.) 

 One or two cyanide killing -bottles, not too large to be carried in the 

 pocket when required; or a larger-sized cyanide killing-jar, or 

 materials for making same, as follows : | lb. of cyanide of potassium, 

 1 lb. of plaster of Paris, a glass jar with wide mouth and closely 

 fitting lid. {See p. 51.) 



Entomological forceps (two pairs). {See p. 53.) 

 Fine-pointed forceps (one or two pairs) : these are useful for 

 arranging the legs and wings of specimens when pinned. 



Needles (two or three) mounted in handles, — also for arranging legs 

 and wings. 



Entomological pins (D. F. Tayler & Co., New Hall Works, 

 Birmingham), Nos. 5 (Is. GcZ. per ounce), 10 (3s. Qtd. per ounce), 16 

 (Is. per ounce), and 20 (7s. ^d. per ounce). The No. 20 pin should 

 be used for all but the very largest Diptera, such as Horse-flies 

 (Tabanidse) and Kobber-flies (Asilidae) ; as it is exceedingly fine, an 

 ounce will go a very long way. {See pp. 53-54.) 



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