100 



Journal New York Entomological Society. [Voi. xi. 



The tool used in winding the coils (Fig. i) consists of a piece of 

 brass wire one fourth of an inch in diameter and three inches in 

 length and roughened in the middle so as not to tire the fingers, ic. 

 One end is planed off square and has from two to six holes bored in 

 this end, i/^, one hole being placed in the center and the others being 

 arranged around the periphery. In the central hole there is placed a 

 steel needle or pin, la, that fits the hole so snug that it will not turn. 



The pin should project a half inch or more beyond the end of the 

 tool and should be slightly smaller in caliber than the insect pin on 

 which it is intended to place the coils. The holes around the pe- 

 riphery are for holding the head of the pin while the coil is being 

 wound, and should be not less than one half an inch in depth and of 

 different sizes, so as to fit the heads of the various sized pins that may 

 be used for elbows. 



The winding of the the coils is accomplished as follows : The head 

 of the pin to be wound is inserted in one of the peripheral holes and 

 bent out at right angles to the tool, being careful while doing this to 

 see that the head of the pin is held firmly at the bottom of the hole. 

 The free end of the pin is now turned against the side of the central 

 steel pin, ja, and held there by the left thumb while the tool is ro- 

 tated between the thumb and forefinger of the right hand until several 



