STATE AGRICULTURAL SOCIETY. . 473 



HAZELNUT. TRUXK. 



at a particular point in the tip of this ball-like bur, where its 

 young can penetrate inwards and subsist upon the fi-uit. 



Dr. Harris (Treatise, p. 65,) speaks of a " weevil grub" as 

 being very common in the chestnuts of this country. But the 

 worm whicli I have met with in these nuts is the larva of a moth 

 and not of a weevil. It grows to more than a half inch in 

 length, and is cylindrical and thick, of a dirty white color with a 

 tawny yellow head, and sixteen feet. It eats the meat of the nut 

 mostly at its tip and on its convex side, the cavity which it makes 

 being filled with little brown and whitish grains; and a small hole 

 is perforated upon one side of the nut at its tip, out of which a 

 portion of these grains are protruded. I have not yet succeeded 

 in rearing this worm, and am therefore unable to give a descrip- 

 tion of the moth which is the source of this mischief. 



16. THE HAZELNUT— Co?yw5 Americana. 



AFFECTING THE STALKS. 



201. Hazelnut bark-louse, Lecanium Corylifex, new species. (Flomop- 

 tera. Coccidse.) 



On the under side of the stalks and branches, adhering to the 

 bark, a smooth sliining hemispheric scale of various colors, from 

 pale dull yellow and deep tawny red to black, many individuals 

 showing a paler stripe along the middle and others with trans- 

 verse black bands, the surface often sprinkled over with project- 

 ing scales of a white wax-like substance. This is commonly 

 small in size, being but about 0.14 in length, but some specimens 

 are larger, measuring 0.20. A similar insect is common u])un 

 the European hazlenut, but is said to be of an orange-yellow 

 color with red spots; I therefore infer it to be a different species. 



AFFECTING THE LEAVES. 



202. IT vzKLNUT TiiKK-iioppKR, Tcldrtuma Coryliy Fitch. (Ilomoptcra. Mcm- 

 bracidio.) 



Puncturing the leaves and sucking their juices the latter part 

 of June, a triangular tree-hopper of. a pale dull yellow color with 



