STATE AGRICULTURAL SOCIETY. 467 



BUTTEEXUT. LEAVES. 



Both species are very similar to tlie Tingis rhomboptcra described 

 in Fieber's excellent monograph of this family, and figured, plate 

 8 fig. 37, but that has a spot on the middle of the outer margin 

 of tlie wing covers and their tips much less discolored with brown 

 than in our insects. 



191. BuTTERN'CT wooLY-woRM , Selaiidrial Jaglandis, hqw s^QCies. (Hj- 

 menoptera. Tenthredinidae.) 



A worm remarkable for being enveloped and wholly hid in a 

 thick coatinsj of snow-white flocculent meal which falls off with 

 the slightest touch, resides in companies on the under sides of the 

 leaves, feeding upon them, in the month of July. It is of a cy- 

 lindrical form, a very little tapering from its head to its tip, and 

 has ten pairs of dull pale yellow feet, its body being of a blackish 

 color and its head pale yellow and polished, with a large black 

 dot upon each side. It has numerous transverse impressed lines 

 and a groove on the middle of its back its whole length. The 

 individuals I have examined were nearly half an inch in length. 

 My attempts to rear them have proved unsuccessful. In one in- 

 stance the leaf on which they were found was pinned to a leaf of 

 a butternut growing in my yard, without disturbing them, but 

 they refused to move from their original abode and perished as 

 the leaf Avithered. They are evidently a species of saw-fly, per- 

 taining there is scarcely a doubt to the genus Selandria and the 

 sub-genus Eriocampa, thus named from its larvse being covered 

 with pruinose woolly matter. 



The Hickory TussocK-MOTii No. 183, occurs about as frequently 

 on the butternut as on the walnut, and two other caterpilhirs be- 

 longing to the same genus but wliich are not yet known to us in 

 their perfect state are also common upon this tree. Other cater 

 pillars and worms which have been observed feeding upon the 

 loaves of the butternut are the larvae of 



The White miller No. 125; 



The Fall web- worm No. 88; 



The Cecropia emperor moth No. 33; 



The Polyphemus moth No. 181; and 



The Black-walnut sphlvx No. 186. 



