78 v The Scottish Naturalist. 



DIPSACACEiE. 

 Scabiosa succisa L. — Common. Knautia arvensis Coult. — Not common ; 

 Cornfields, Munlochy. 



(To be continued. ) 



SCOTTISH GALLS. 



( Confirmed from p. 32. J 

 By J. W. H, TRAILL, M. A. 



Astragalus hypoglottis L. — The galls consist of leaflets 

 which become conduplicate, hard, and fleshy. Usually 

 when a leaf is affected almost every leaflet on it suffers, and 

 the whole form a mass so compact at times that the indivi- 

 dual leaflets are hardly distinguishable, though readily so in 

 general. The masses formed may be terminal or axillary, 

 and seem to consist at times of all the leaflets of a bud. 

 They are very light yellowish-green, and are covered with 

 whitish hairs. Each leaflet contains one or more Ceci- 

 domyious larvae. Very common on the coast a few miles 

 south of Aberdeen. 



Vicia cracca L. — On this plant there occur galls very like 

 those on A. hypoglottis in every point, but of larger size, 

 the leaflets being larger. Each leaflet is tenanted by one 

 or more larvae of" Cec. onobrychidis Bremi. At Muchalls, 

 near Aberdeen, at Dunkeld, and at Lintrathen. 



Vicia sylvatica L.— In this also the galls consist of leaflets 

 which are conduplicate, but the leaflets remain quite dis- 

 tinct, not forming masses, and are less hard and fleshy, and 

 less inflated. Externally they are smooth, and are reddish- 

 brown tinged with green. Usually only a few leaflets on 

 some of the side leaves are affected. Each contains several 

 white larvae of a Cecidomyia. Not very common at Much- 

 alls in August. 



Lathyrus pratensis L. Each gall is a leaflet, treated as in 

 the Vicia, but of larger size and more inflated. They occur 

 in groups of three to eight in the axils of the leaves, but 

 remain distinct ; their colour is reddish-brown or green. 

 Each contains two or three orange Cccidomyious larvae. 

 Common at Muchalls in August. 



Rubus id/lus L. The galls consist of woody swellings on the 

 stem or leaf-stalk of a rounded or oblong form, y 2 ' to y^' 



