ive) 
bo 
Gall-makers, 
= 
Sa eP wg > 
Natural Order. g 3 F BS 4 BS 2 & g piel ge 
g22 828 83 3 - Bees 2s 
Zon Boe Be © & BOR ma 4B 
1 Crucifere . . 3 5 5 5 
2 Cistinee. . . 1 1 1 1 
ShWaolesan is fish emw teh, ieee 1 1 1 
4 Caryophyllacee . . 2 241? 241? 1 1 
5 Hypericineze apy: L Tied el 1 
6 Geraniacew. . .. LI 1 1 1 
7 Sapindaces. . . 1 1 1 1 
8 Leguminose . . & 11 15 14 1 
9 Rosaceze . : 7 19 18 7 4 1. 
10 Umbelliferze 2 2 2 2 
11 Rubiacez 1 5 14 10 + 
12 Valerianee . 1 1 1 1 
13 Composite . 5 8 11 2 3 «6 
14 Campanulacez. 1 1 2 1 1 
15 Ericacee. Sens 1 1 1 
16 Oleineew. . . 1 1 1 1 
17 Plantagineze 1 1 1 1 
18 Scrophularineew . . 2 3 3 3 
U9 Malbiahar.e sabe ste 0k 1 2 1 1 
20 Polygoneae. . ., 1 1 1 1 
21 Urticaceze oe Sea: 1 1 1 
22 Salicinese . . 2 14 34 16 12 6 
23 Cupuliferz . 3 3 18 15 2 1 
24 Betulacez . 2 2 9 3 6 
25 Coniferze. 3 3 3 1 La 
26 Gramineae . 2 3 3 1e* 
27 Filices 3 3 3 1+ 
58 96 155 24 16 3 68 8 2.29 
In the above analysis I have enumerated as distinct galls 
all oceurring on distinct species of plants, even when the work of 
a single species of insect, hence the number of galls here 
enumerated must not be held to denote as great a number of 
gall-makers. Undoubtedly there are still many galls to be dis- 
covered in this district however, so that the total number of 
gall-makers is probably much above that given here. 
Conclusions drawn from this analysis, in regard to the makers 
of galls, would be defective if not corrected by a wider know- 
ledge, yet a careful examination of it gives some interesting 
results, one or two of which I may perhaps be permitted to 
point out. In the first place we see that by far the majority of 
gall-makers belong to comparatively few orders of insects or to 
mites, and that of these the gall-midges (Cecidomyide) hold the 
first rank, both in number of plants attacked by them, and in 
number of galls caused by them, but many of the galls belong 
* 2 Isosoma galls. + 2 Anthomyia? 
