THE CANADIAN ENTOMOLOGIST. 83 



When one is ready to pin and spread them, they can then be put into 

 the cyanide bottle, or killed with chloroform, pinned and spread at once. 

 I cannot urge too strongly that Tortricids should not be touched with the 

 thumb and finger, but should be handled with a pair of fine forceps, laid 

 upon a piece of pith held between the thumb and finger, and the pin 

 inserted and passed down through the middle of the thorax so as not to 

 injure in any manner the thoracic tuft. 



For the larger and medium-sized Tortricids I prefer japanned pins> 

 leaving one-fourth the length of the pin above the insect in case the long 

 or German pin is used. For the smaller ones silver wire may be used, 

 which, with the insect upon it, should be inserted in one end of a neatly 

 cut, brick-shaped piece of fungus, through the other end of which a pin 

 of any desirable size may be passed, and the specimen put in its place in 

 the cabinet. By far the best, and the only fungus known to me, suitable 

 for this purpose, is the Polyporus betulinus Fr., which grows in abundance 

 upon decaying white birch. This fungus should be thoroughly dried, after 

 which it may be cut with a razor into pieces of any desired .form. A 

 collection of Micros mounted upon neatly cut pieces of this clear, milk- 

 white fungus, shows to very good advantage. 



Another kind of pin which is very good for Micros is one of German 

 manufacture, of silver, for sale by B. P. Mann. The great objection to 

 this pin is its high price. A desideratum seems to be a fine silver pin as 

 short or shorter than the English pins, of suitable size for the smaller 

 Tortricids, to be used with the fungus as described. I very much dislike 

 the common insect pins for Tortricids, for they corrode so much, in many 

 instances, as to nearly ruin the specimens. 



Of course the collector should spread his captures as soon as their 

 muscles are well relaxed, or else before they become rigid, if he has time, 

 otherwise they may be put aside, softened up and spread at leisure. I 

 would prefer to have all sent to me for determination spread, provided 

 the collectors are skillful at this, but if not, they had better not attempt it 

 lest they ruin the specimens. 



Paedisca Wort king toniana, n. s. 



Palpi, head, thorax and fore wings lemon yellow, inclining to straw 

 color in some specimens ; outside of the middle joint of the palpi stained 

 with brown ; costal edge of the fold of the males and a spot over the 



