314 The Scottish Naturalist. 



brown, with dark stripes, and the joints of the antennae 

 2 and 14, while C. Cerastii is said by Binnie to be dark 

 brown and to have the joints of the antennae 2 and 13.) 



Hypericum pulchrum (St. John's Wort) bears galls very 

 much like those on the Cerastium in structure. They 

 were found by Dr. Buchanan White at Dunkeld, and in 

 Braemar (T,S.N., II., 31, 172 ; T.A., I. 57; and T.A., 

 II., 54). It was referred by me (with a query) to C. 

 serotina Winn ; but seems rather, as Dr. F. Loew has 

 suggested to me, to be the work of C. Hyperici Bremi. 



Tilia vulgaris Hayne (Lime-tree) bears two forms of midge- 

 galls in Scotland. 



1. The first are round or oval swellings, -J- to \ inch long, on the 



bract, where the peduncle separates from it, or in the 

 flower-bud, which becomes much swollen and distorted. 

 The galls are fleshy and smooth, and enclose an irregular 

 cavity tenanted by several larvoe, which seem to be those 

 of C. floricola Rudow. I have galls sent me by Dr. F. 

 B. White in 1881, from Perthshire (T.S.N., VI., p. 255). 

 They seem to belong to the same species as twig-galls 

 found by Mr. Hardy (S.N., III., 315-6), in Berwickshire, 

 and doubtfully referred by him to C. Tilice Schr. 



2. The second form is quite like a gall recorded in Reaumur's 



Mem. III. (p. 421, t.34, f.7). It is a tubular inrolling 

 of margins of young leaves ; the inrolled parts become 

 reddish, fleshy, and somewhat thickened ; and are 

 tenanted by reddish orange lame of a Cecidomyia, which 

 go to earth when full fed. The galls were common on 

 one or two trees in Old Aberdeen, chiefly on shoots 

 from the root. The midge has not yet been reared 

 from the larvae, hence the species is uncertain. Mac- 

 quart calls it, from its habits, C. limbivolvens (T.S.N., V., 

 p. 214 b. ; and T.A., 1885, p. 50). 

 Ulex Europaeus (Whin, Furze, or Gorse) bears inflated flower- 

 buds, which differ from ordinary flower-buds, externally, 

 only in size ; they are hollow, and arc tenanted by one 

 larva of Asphondylia Ulicis Trail (T.S.N., II., 172, and 

 Verrall in Ent. Monthly Mag. xi., 225). Common near 

 Aberdeen (T.S.N., II., 172; T.A., I., 58), also near 

 Glasgow (B.L., p. 159, and B. II., p. 113). 



