27 



Sinoxylon basilare^ ''^'ly- 

 'I rlcJiestis tristis. 



ORTHOPTERA. 



GRASSHOPPERS, CRICKETS, ETC. 



CEcanthus niveus^ L. Tree cricket. 

 HEMIPTERA. 



BUGS, PLANT LICE, ETC. 



Calliptcrtis iiliiiifolia^ Monell. Elm leaf Aphis. 

 Coiopha ulniicola. Fitch. Cockscomb <^all Louse. 

 Gossyparia ulmi^ Geoff. Ehii leaf Aphis. 

 JMytilaspis conchiJor»iis^ Bark Louse. 

 Pe})ipJiagus 7il»ii-JiisHS^ Walsh. 



Schizonetira amerlcana^ Riley. Elm leaf gallLouse. 

 Schizoitetira i(l/m\ L. 

 Schizo)ieura rileyi\ Thomas. 

 Tetraticura ulnn^ Elm gall Louse. 



As has been already stated, some of the insects enumerated do 

 little or no harm, but most of them are possibly injurious and 

 many of them very positively so. The only exceptions are a few 

 wiiich live in dead wood. A few of those given in the list are 

 not found in New England, and several others have not yet ap- 

 peared in Vermont, at least, so far as I know, although some o( 

 them may be found here at any time. The order given in the list 

 will not be followed as the different species are taken up more or 

 less in detail, since it is more convenient to adapt a more scientific 

 arrangement. 



SAW-FLY OK ELAI AND OTHER TREES. 



Cinibcx Americana^ Leach. 



This saw-fly is shown in figure 17, copied from one of Dr. 

 Riley's. The figure shows the difierent stages of the insect, /'. be- 

 ing the adult male,y". the cocoon, d. the larvae first hatched, c. c 

 the full grown larva;, a. leaves of willow sh(jwing location of eggs, 

 c. a single Q'g<^ mucli enlarged, y. shows the curious saw-like ap- 

 pendage with which tlic female cuts slits in which the eggs arc 

 placed, k. siiowing the end of the saw still more highh' magniiied, 

 g. shows the pupa in the cocoon, while h, shows the same taken 



