Feb., 'o6] ENTOMOLOGICAL NEWS. 53 



of insect life at all seasons of the year, and this material is 

 treated very easily and with complete success in the apparatus 

 described. 



Manu7-e. — The manures, especially from the stable, harbor 

 great numbers of various arthropods which are not easy to col- 

 lect because of the rapidity with which they escape, and also 

 because the material itself is frequently anything but pleasant 

 to examine. 



Instead, with the apparatus, one is certain to secure all the 

 arthropods hidden in the manure, since by their voluntarily 

 seeking the heat, they fall continually into the tube in great 

 numbers. 



Myrmecophilous Arthropods. — Everything is caught, even 

 including the ants, by putting upon the sieve some of the earth 

 and detritus from the ant-hills. 



Bark from trees. — The effect is marvelous which is obtained 

 by treating the bark from various large trees, in this apparatus. 



Under the bark there are found a great variety of insects 

 which hibernate, either in a state of maturity or as larvae. 

 All these fall into the tube of alcohol almost entirely free from 

 detritus of any sort, so that it is easy to quickly recognize the 

 fauna thus sheltered during the winter by a given tree or a 

 given species of plant. 



Green parts of the plants. — In summer, better than in winter, 

 the insects which live upon the foliage can be collected, however 

 minute, by placing this, when fresh and just gathered, upon 

 the sieve of the apparatus. 



Parasites of the Vertebrata. — The host being dead and left 

 cold for a few hours (bird or mammal), is then placed upon 

 this apparatus and rapidly loses its exterior parasites (Puli- 

 cidae, Anoplura and Pediculidae, Acarida, etc.), which being 

 attracted by the artificial heat, abandon the host hastily and 

 fall into the tube containing alcohol. 



These researches, otherwise so troublesome and difficult 

 under ordinary methods, are, by this apparatus, effected auto- 

 matically and with absolute results. 



In many other special cases I have obtained extremely use- 

 ful results from the employment of the described apparatus 

 which I recommend to naturalists. 



