BRITISH OAK GALLS 161 
The extraordinary manner in which some galls of Cynips Kollari grow in 
geometrical, and in peculiarly-arranged groups, is exemplified in 
PLATE XXXVII. 
GROUP: 
1, 2. Three’s. 3to8. Four’s. 9,10,11. Five’s. 
12. Two two’s coalescent, one single. 
13. Two coalescent, three single. 
14. Two coalescent, four single. 
Fourteen groups comprising sixty-one galls. 
The conglomerate clusters they form are also remarkable ; a few are shown on 
PLATE XXXVIII. 
CLUSTER : 
. Two galls coalescent and seventeen single. 
. Two two’s coalescent, three coalescent, and seven single. 
. Three two’s coalescent and four single. 
Three two’s coalescent and eleven single. : 
. Twelve single. 
. Nine single. 
. Three coalescent and eleven single. 
DARA RON 
. Eleven single. 
Eight clusters comprising one hundred and six galls. 
A few galls are obscured by those nearest to the observer. 
11 
