7 he Scottish Naturalist. 325 



Campanula rotundifolia (Hairbell or Bluebell) very fre- 

 quently, iu Moray, Aberdeen, Kincardine, Forfar, and 

 Perthshire, and near Glasgow, bears galls in the form o- 

 globular or ovatebeaked bodies in the axils of the 

 leaves, or of terminal irregularly rounded masses, 6 to 

 8 mm. (j- to \ inch) across, consisting of several galls 

 fused together. In all cases the outer surface of the 

 galls is smooth, hairless, and green or dull brownish- 

 green. The walls are compact but thin. Often several 

 galls occur on each stem. They are either flower-buds or 

 leaf-buds distorted. Each is tenanted by one larva of 

 C. Campanula'. Muell. (M.E.S., 1871, p. 8; T.S.N., I., 

 157 ; T.A., II., 66, B.I., 161.) Dr. F. Loew has re- 

 cently described and figured galls on Phyteuma orbicu- 

 lare, and P. spicatum much like some of those on the 

 Campanula (Verh. Z. B. Ges., 1886. I., 487). 



Vaccinium Vitis Idsea (Cowberry or False Cranberry). In 

 Braemar I have more than once found terminal pseudo 

 galls on this plant, consisting of involute, imbricate, red 

 fleshy leaves of the terminal bud. Between them live a 

 few yellow larva? of a Cecidomyia. (T.S.N., I., 158 ; and 

 New Ser., I., 214; T.A., I., 66.) 



Gentiana campestris (Field Gentian). In August, 1882, I 

 found, in Braemar, flower-buds infested by larvee of a 

 Cecidomyia, by which they were rendered slightly fleshy 

 and swollen ; the sexual organs were ill-developed. 

 (T.S.N., New Ser., I., 214.) 



Fraxinus excelsior (Ash). 



1. Very frequently the midribs of the leaflets are thickened 



for about 5 or 6 mm. (i or \ inch), or more if two 

 or more galls are fused together. The swellings are 

 most noticeable below, and open by a slit along the 

 midrib above ; this slit remains closed in the fresh 

 leaflets, but gapes in the fallen or dying leaves in autumn. 

 The gall is hard, but fleshy; and is smooth when fresh. 

 Each contains one or more larvas of Diplosis botularia 

 Winn. I have found the gall in Moray, Aberdeen, Kin- 

 cardine, Forfar, and Perth. (T.S.X., I., 15S, II., 352 ; 

 T.A.I., 66.) 



2. Xeir Banff and near Aberdeen, I found, in August, i886> 



