214 Professor Trail on ihe [sess. lii. 



neighbourhood of Vienna, and from the Tyrol. On Alnns 

 glutinosa an Erincum, very similar in appearance to the 

 above, is very common in Scotland, and also occurs in Saxony 

 and near Vienna, but the hairs in it are different from those 

 of E. alnigcnum. It is known as E. alncum, Persoon. 



2. Another mite-gall is frequently met with on the leaves 

 of A. incana, along with the Erineuvi, very often even on the 

 same leaves. It is known by the name Ccphaloneon pustu- 

 latum, Bremi, and belongs to the "nail-gall" type. Often 

 a leaf bears upwards of a hundred of the galls on its upper 

 surface, some scattered singly, others crowded into groups as 

 closely as they can stand. They are irregularly oval, rough, 

 and red, or yellowish-red ; and do not exceed 2 mm. in 

 diameter. Each communicates with the lower surface of the 

 leaf by a narrow hole, which is surrounded with a warty lip. 

 This gall occurs on A. incana in Switzerland, in Germany, 

 and in Austria. It is even more conunon in the same 

 countries on Alnus glutinosa, upon which tree it is also very 

 plentiful in many localities in Scotland. 



Junipcrus communis, Liini. — At Oiliord in Hardanger, last 

 August, I found galls of a midge {Hormomyia junipcrina, 

 Linn.) on juniper twigs. They resemble green cones at the 

 tips of the smaller twigs, and are ovate, about 6 mm. long 

 by 4 broad, and externally consist of three broad scale-like 

 needles, which surround three smaller needles, between 

 which is the cavity occupied by the larva. This gall is 

 plentiful in Scotland, and has been recorded from France 

 and Germany ; and the midge is also stated in Siebke's 

 Enumeratio to occur on the Dovrefield mountains. 



Jyist of Makers of Galls found hy me in Norway in 

 1878 and 1887. 



COLEOPTKIIA. 



Gymnctron Campanuloi, Cyll., galled ovaries of C rotundifolia. 



Hymbnoptbra. 



Though I did not rear the makers, I venture to refer the 

 galls to the undermentioned insects, as they agree entirely 

 with galls of these species from other localities. 



