128 W. H. ASHMEAD. 



Two or more celled, with spines . Acraspls ermacei Walsh, 



(Q. alba) ; ^-1. echini Ashm. (Q. bicolor). 

 One celled, surface not netted, pubescent . Dnjophania Carolina 

 Ashm. (Q. alba). 

 aaa. — Globular galls without a distinct kernel . Audricus idri- 

 cidus Bass. (Q. alba). 

 Minute, jumping gall . Neuroteras saltatoriits Edw. (Q. 



undulatus). 

 Small, pubescent, gall . Biorhiza mellea Ashm. (Q. 

 obtusiloba). 

 h. — Spindle-shaped galls, on a pedicel . Andric}(s fusiformls O. S. 

 (Q. alba); A. chinquapin Fitch (Q. chin(juapin, Q. 

 bicolor) ; Aviphibolips ccelebs O. S. (Q. rubra). 

 c. — Wooly or hairy galls ; spherical, semispherical, wartlike, or 

 irregular, generally along the veins. 

 Semisjjherical on mid-vein, covering wheat-like kernels . An- 

 dricus Jiocei Walsh (Q. alba") ; A. Patfoni Bass. 

 (Q. obtusiloba). 

 Kernels irregular . Andricus lanigerus Ashm. (Q. virens) ; 

 A. nuhila Bass, (oak unknown) ; Bassettia tenuicornis 

 Bass, (oak unknown). 

 Kernel, a round, flattened disk with a nipple . Nenroterus 



laiirifolice Ashm. (Q. laurifolia). ■ 

 Small, wartlike, hairy galls . Nenroterus verrucarum O. S. 

 (Q. obtusiloba) ; N. minntimimns Ashm. (Q. virens) ; 

 N. floccosus Bass. (Q. bicolor). 

 Spherical . Acraspis lanaiglohidi Aji\\m. {(^.hicoXox); An- 

 dricus infuscatm Ashm. (Q. catesbsei). 

 d. — Tubular galls with or without spines. 



With spines . Andricus tubicola 0. S. (Q. obtusiloba). 

 AA. — Galls intimately connected with the substance of the leaf, so 

 that they cannot be taken off without carrying a 

 portion of the leaf with them. 

 a. — Globular, hollow, monothalamous galls. 



f . — Kernel in the centre kept in position by filaments radia- 

 ting from it to the shell . Amphibolips nubilipennis 

 Harris (Q. rubra) ; Andricus f singidaris Bass. (Q. 

 rubra) ; A. Osten Sackenii Bass. (Q. ilicifolia, Q. 

 coccinea). 



