INSECT-GALLS OF THE VICINITY OF NEW YORK CITY 37 



82. Spiny Witch Hazel Gall (Honnaphis spinosus Shiner). — A deformation of 

 the frtiit bud. covered with a number of rather long spines, \Yith a funnel-like 

 exit at the base. Green in summer; brown in winter. On witch hazel {Hain- 

 amelis vir giniana) . Common. 



83. Cock's Comb Elm Gall (Colcpha ulmicola Fitch). — Forms a cock's 

 comb, blubber-like growth on the upper side of the leaf of the elm {Ubnus ameri- 

 cana). June. Common. 



84. Sumac Tomato Gall {Pemphigus rhois Fitch). — Smooth, rounded. 



