STATE HORTICULTURAL SOCIETY. 201 



94. P. caryce- septa, Shimer. 



Forming flattened galls with a septum, on the leaves of Carya alba, 

 which open both above and below. 



95. P. f areata, Shimer. 



Forming galls similar to those formed by P. carycB-semen, but larger. 



96. P. depressa, Shimer. 



Forming depressed galls on the leaves of Carya-alba, which open 

 below with a constricted mouth fringed with filaments. 



97. P. comic a, Shimer. 



Forming galls similar to the last, but without a fringe. 



98. P. caryce-gumtnosa, Riley. 



Forming pedunculated, ovoid or globular galls on the under side of 

 the leaves of Carya-alba ; the gall white, pubescent and gummy or sticky, 

 opening below in a fibrous point. 



99. P caryce-ren, Riley. 



Forming numerous, more or less confluent, mostly reniform, galls on 

 on the petiole of Carya-alba; green, densely pubescent, and opening 

 with a slit the whole of their length and transversely to the axis of the 

 petiole. 



100. P. carycB-fallax, Walsh. 



Forming conical galls, thickly crowded on the upper surface of the 

 leaves of Carya-alba. Strongly resembling P. carya;folicB, but the height 

 one-third greater than the basal diameter, and opening below instead of 

 above, in a circular, fuzzy mouth. 



loi. P. castanece, Hald. 



This is the Chermes castanece of Haldemann, which Riley says is 

 undoubtedly a Phylloxera; although I have not seen the description, I 

 presume, from the name, that it infests the chestnut. 



I think it probable, study of those insects found on the hickory leaves 

 will show that a large portion of those given as distinct species are but 

 varieties of one or two species. 



102. Chermes pinifolicB, Fitch. 



This genus, as understood by Dr. Fitch, appears to include those spe- 

 cies in which the female is oviparous, but does not extrude her eggs ; but 

 clinging to the leaf, the abdomen swells and finally she perishes, leaving 



