Plate 4. — Spongy Oak Apple. 



{AmphiboUps confluens, Harris.) 



[Reproduced by special permission of William Beutenmiiller, New York, from the 

 author's edition of " The Species of Amphitaolips and their Galls," Amer. Mus. of Nat. 

 Hist., vol. 26. art. 6, 1909.] 



"100] 



