154 Proceedings of the Royal Physical Society. 



The form of the terminal ducts of the generative organs 

 of these specimens agrees very closely with those I have 

 described and figured in the Journal of Malacology, 1897, 

 vi. p. 7, pi. ii. fig. 1, and differs from those of the large black 

 slug common in the British Isles, Arion empiricorum, Fer. 

 In addition to black and brown forms, there is a bicoloured 

 variety also. 



[The black and brown forms are about equally common 

 in the hayfields round Thorshavn and in Naalsoe, but the 

 bicoloured form, which is much scarcer, is usually found in 

 swampy ground, outside the cultivated zone which surrounds 

 the villages.] 



Vitrea alliaria (Miller) — Thorshavn and Naalsoe. August 

 1903. 



I have to thank Mr B. B. Woodward for kindly examining 

 these specimens and expressing an opinion on them. He 

 writes, " They are all what I know as Vitrea alliaria. Those 

 marked 1 and 3 are to my mind typical. Of the No. 2, in 

 spirit, the smaller individual is typical, the larger shows 

 an individual variation, being slightly more tightly coiled, 

 which contracts the umbilicus slightly, and raises the spiral 

 correspondingly." 



[Common under stones in cultivated zone.] 



Limnaea palustris (Mull.) — Thorshavn. 



A single immature shell, which I think may be referred to 

 this species. 



ISOPODA. By R. F. Scharff, Ph.D., F.L.S. 



The terrestrial Isopods collected in the Faroes include only 

 two species, both of which belong to the Oniscidae, viz., 

 Oniscns asellus and Porcellio scaler, and these do not differ 

 from specimens taken in the British Islands or on the 

 Continent. 



Oniscus aselhis (Linn.) is perhaps the most common of the 

 European woodlice, especially in the neighbourhood of human 

 habitations. It occurs almost throughout continental Europe, 

 and has been taken also in the Azores, in Iceland, Greenland, 

 and in North America. 



[This species is not very common in the Faroes, the 



