The Scottish Naturalist. 117 



polymorpha, amongst molluscs, Cynips Kollari amongst insects, and Anacharis 

 alsinastrum amongst plants, have so naturalized themselves in our island, that 

 it would be utterly impossible to eradicate them. Of these examples, Cynips 

 Kollari is to me of special interest. Although noticed by me in Devon, certainly 

 for forty years at the least (since we used its galls for marbles, when I was quite 

 a child), yet it did not reach Birmingham until i860, when it was first noticed 

 by me in the town— a fact not to be wondered at, considering how often its galls 

 were brought from the south by tourists. It was not, however, until the autumn 

 of 1866 that it was first seen by me invading Birmingham, along the hedges on 

 Worcestershire side. The two streams have since met, and C. Kollari is to be 

 found in both town and country." We shall be glad to hear if the galls of 

 Cynips Kollari have been observed elsewhere in Scotland. As regards the 

 above-mentioned mollusc (Dreissena poly?norpha), the following incident will 

 serve to show how it may easily be accidentally introduced into a locality. Mr. 

 William Herd showed me some shells, which he had found attached to some 

 logs just brought by rail to the Goods Station at Perth. They belonged to this 

 species, and one of them, on being placed in a cup of water, showed signs of 

 life. Now, if these logs — instead of having been placed in the. Goods Station — 

 had been taken to the harbour, and, as might very probably have happened, 

 come in contact with the water, the Dreissena would probably have become 

 naturalized at Perth. Most likely it was in this manner that this mollusc be- 

 came established in the Forth and Clyde Canal, and in other canals. — Ed.] 



The "Cotton Gall of the Oak."— Mr. W. H. Kidd (of Godalming, Surrey) 

 who has paid much attention to gall insects, had a theory that this was not 

 found north of a line drawn from the Thames to the Severn. I have, however, 

 found it in Perthshire and Inverness-shire, and should like to know where else 

 it occurs in Scotland. The gall cannot be easily mistaken, from its resemblance 

 to a tuft of pure white cotton-wool.— F. Buchanan White. 



Captures of Lepidoptera at Rannoch.— My brother and I visited this 

 most productive hunting ground again this summer, about the middle of 

 August, and had the pleasure of taking another specimen of Noctua sobrina, 

 together with the following rather local species : -E. blandina ; C. davits; 

 D. obfuscata ; F. pinetaria ; L. olivata ; M. rubiginata, var. plumbata ; 

 C.munitata; C. testata ; C.populata; C. imbittata ; X. rurca, var. combusta; 

 C. graminis ; C. Haworthii ; A. porphyrea ; N, glareosa ; N. co?iJlua ; 

 N. Dahlii ; N. cerasina ( neglecta ) ; O. suspect a ; E. viminalis ; A. occulta ; 

 A. tincla ; H. adusta ; C. solidaginis ; P. interrogation is ; S. ano?nala; 

 S. alpinalis ; C. margaritellus. I may also mention, that from some larvae 

 taken last year, I have reared, amongst other commoner species, one of each of 

 the following : — T. cratcrgi, S. illustraria, and F. conspicuata. — Thomas 

 Hutchinson, Grantfield, Leominster. 



Crambus myellus in Aberdeenshire.— Of this species I have to re- 

 cord two captures in addition to those already published. Of these one was 

 taken in Glen Muick, in July, 1870, by Mr. Sim, naturalist in Aberdeen ; while 

 the other (verified by Dr. Buchanan White) was taken at Fyvie some years ago, 

 and is now in the University Museum. Both the specimens are somewhat rub- 

 bed, but still distinctly recognizable. In a collection made at Fyvie, besides the 

 above, the most interesting species are the following :— M. Artemis, S.ocellatus 



