8o THE SCOTTISH NATURALIST 



Slugs in the mountains of Westerness. — In 19 13 Mr R. G. 



CaiTuthers, of the Geological Survey of Scotland, was kind enough 

 to send me some Slugs from Ben Alder and Loch Ericht, which are 

 interesting from the heights at which they were found. From the 

 Eagle's Corrie on Ben Alder, at a height of 2500 feet, he sent (on 

 the 25th of June) Liniax arborjnn var. rupicoia, the only one he 

 saw. It was small, about a third of the size to which the species 

 can attain, and was entirely brown-black in colour, with the banding 

 obsolete, and the variety is distinctively the mountain form of the 

 species. Along with it he sent a quarter-sized example of the type 

 of Arion aier, with the trifasciation of the footsole very clearly 

 marked. At the same date he sent various examples of Arion ater, 

 the smaller of which was the type with trifasciate footsole, and the 

 larger, an adult, was of var. aterrima^ in which the footsole is 

 uniformly dark in colour, nearly or even quite black. These were 

 from the shores of Loch Ericht, at a height of ti6o feet, where the 

 species was abundant, and it was equally common by the moorland 

 paths up to 1500 feet. I shall be glad if other Scottish naturalists 

 will favour me with examples of the mollusca of the mountains, 

 with full and precise notes as to height, locality, date, habitat, 

 frequency, etc. — W. Denison Roebuck, 259 Hyde Park Road, 

 Leeds. 



BOOK NOTICE. 



The British Marine Annelids, Vol. III., Part I. (Text), and Part 

 II. (Plates). Polychteta. Opheliidse to AmmocharidEe. By Professor 

 W. C. M'Intosh, F.R.S., etc. Issued to the subscribers of the Ray 

 Society for 191 4 and 19 16. 



The value of Professor M'Intosh's great work on British Marine 

 Annelids is too well known to students of the Nemertine and Polychsete 

 worms to need repetition here. The unanimous desire of all who know 

 the monograph is to see it completed. It is therefore a genuine pleasure 

 to record the issue of another (the third) of the series of folio volumes. 

 The families dealt with in the present volume include the Arenicolids 

 or Lug-worms, and others of economic interest. About ninety species 

 in all are described. Unfortunately the War has, in the meantime at 

 least, deprived the volume of the beautiful coloured plates one has 

 learned to associate with the work. Having been executed abroad, 

 it has not been possible to obtain them up to the present time. 

 Excellent uncoloured copies of the coloured proofs by the collotype 

 process have been substituted ; and, should the six coloured plates be 

 eventually obtained, their issue to the subscribers, and to purchasers 

 of the \ oliune, is provided for. W. E. 



