350 [Mat 



Group of white and chestnut-oaks. | Group of red. black and willow-oaks. 



2. Woolly excrescences, with a great Dumber of seed-like kernels 

 inside. 



6. Q. alba : C. seminator Harris. 36. Q. nigra ) 



Q. ilicifolia :• C. operator 0. S. 

 Q. palustris J 



3. Bladder-like, thin-shelled, hollow, irregular galls, crowded to- 



gether round small liml »s. 



13. Q. alba; C. forticornis Walsh. 

 Syn. of gall: Q. ficus Fitch. 



4. Clusters of small, narrow, deformed leaves, with the gall in the 

 centre. 



55. Q. prinoides ; gall-fly unknown: 

 gall Q.frondosa Bassett. 



A. A. Swellings of the branches, twigs, etc.. which cannot be taken 

 off", without breaking the branch. 



a. Swellings at the t i p of the twig. 

 20. Q. alba : C. batatus Fitch. 31. Q. phellos: C. q. phellos 0. S. 



5. (I. alba; C. clavula Bassett. *32. Q. ilicifolia; C. similis 0. S. 



Syn. of gall. Q. tuber Fitch. 

 Q. arbos Fitch ? 

 b. Swellings iu the middle of the branch. 



39. Q. rubra ; C. punctata Bassett. 

 ID. Q. tinctoria ; C. podagrse Walsh, 

 tl. Q. tinctoria: C. scitula Bassett. 

 38. Q. palustris: C. cornigera 0. S. 

 *38. Q. ilicifolia: gall-fly unknown. 



III. Remarks supplementary to the two preceding Tables. 



a. Galls on the group of the white and chestnut-oaks. 



1. C. strobilana 0. S.. Proc. etc. Ill, p. 690; ( 9 ; Q. prinus, var. 

 bicolor); the gall Proc. etc. T, p. 254. This, as Mr. Reinhard informs 

 me, is a true agamous Ct/nips, in the restricted sense of Hartig; it be- 

 longs to Hartig's first division, which has the tip of the abdomen pube- 

 scent. 



2. C. (JLOBULUS Fitch, Rep. II, No. 312 ( $ ; Q. alba). Compare 

 also (). S. Proc. etc. I, p. G8 and Bassett, Proc. etc. II, p. 328. Dr. 



Fitch, Mr. Walsh. Mr. Bassett and myself have found this gall on Q. 

 alba. Mr. Bassett has found a similar gall, giving apparently the same 

 insect, on Q. montana. (falls of the same kind were observed by me 

 on Q. obtusiloba and by Mr. Walsh on Q. macrocarpa ; neither of us 

 have obtained the insect, however. Cynips globulus belongs to the genus 



Ci/nips, in the restricted sense of Hartig. 



3. C. centricola 0. S. Proc. etc. I, p. 58 ($; Q. obtusiloba'). 

 Likewise a Ci/nips in Hartig's sense. 



