CATALOGUE OF BRITISH 
PLANT-GALLS 
HE first catalogue of British plant-galls was com- 
X piled by Albert Muller, and published in 1872 in 
the Entomologist's Annual. The gall-causers represented 
five Orders of Insects in the following proportion : Hymen- 
optera 36, Coleoptera 9, Lepidoptera 2, Diptera 36, 
Homoptera 8—total 91. 
The second catalogue was published twenty-six years 
later, by Mr. S. L. Mosley, in the Naturalist's Journal. 
It gave brief descriptions of 197 galls. The causers were 
arranged under the following headings: Hymenoptera 67, 
Coleoptera 8, Lepidoptera 3, Diptera 80, Homoptera 9, 
Acari 13, Nematoda 7, Unknown 5. 
No catalogue has appeared since 1898. Early in 1909, the 
late Edward Connold published in his “ Plant Galls of Great 
Britain,” descriptions of 425 galls. No systematic arrange¬ 
ment was attempted, and no effort was made to enumerate 
all British records. A few galls caused by fungi were 
included. In the present catalogue over 800 galls, caused 
by Insects, Eelworms, and Fungi, are described. The 
numerical proportion of the causers under their Orders is 
as follows: Hymenoptera 136, Coleoptera 91, Lepi¬ 
doptera 37, Diptera 248, Homoptera 117, Acari 76, Nema¬ 
toda 25, Fungi and Mycetozoa 145. About 25 are 
imperfectly known. 
The great majority of British naturalists possess a more 
or less intimate knowledge of our native wild plants; hence 
the most commendable basis of classification for a catalogue 
