150 THE CANADIAN ENTOMOLOGIST. 



Strips should not be too tight ; under these strips the paper envelopes can 

 be tucked. The advantages of this method are that the flap of the 

 envelope always remains closed. The name may be seen without the 

 trouble of removing the envelope, and with a number of cards species can 

 be filed away in their proper order. 



When packing specimens for shipment a thin layer of cotton placed 

 between each sheet will prevent much damage in transit. 



The most convenient way to keep paper for envelopes is to get it cut 

 into the shape desired and then put up in pads. These can be carried 

 conveniently in the collector's bag, and are always ready for use. 



Trusting that these hints may be of use to some of our collectors. 



J. Wm. Cockle, Kaslo, B. C 



PRACTICAL AND POPULAR ENTOMOLOGY.— No. 20. 

 A Homemade and Effective Insect Trap. 



BY JOHN D. EVANS, TRENTON. 



For several seasons past the writer has used an insect trap of simple 

 construction, and with such good results that he offers the idea to anyone 

 who may wish to try the experiment the coming season. 



The light used is an incandescent lamp of i6-candle power, suspended 

 from the cornice in froi.t of the porch, the entrances thereto being at the 

 sides. 



The trap consists of a funnel made of a half-sheet of double elephant 

 drawing-paper (other paper of like colour, strength and stiffness will 

 probably answer), with the light so placed that it is just belov/ the top of 

 the funnel. The paper being translucent, the funnel becomes a large 

 luminous object, and seems to be most attractive for myriads of insects of 

 nearly all the orders. The lower part or small end of the funnel is inserted 

 in the neck of a large wide-mouthed bottle or deep jar, into which it fits 

 tightly and extends down about one-fourth of the depth of the bottle. In 

 the bottle is placed a liberal supply of lump cyanide of potassium, 

 sufficient, in fact, to cover the bottom, and then about one-third of the 

 depth of the bottle is filled with cotton batting. Insects that once enter 

 the bottle very rarely can escape again, and the strong fumes so quickly 

 overpower them that fresh specimens are seldom, if ever, injured. 



May, 1907 



