NATURAL HISTORY SOCIETY OF GLASGOW. 33 



up from deep water. Previously he had looked upon the species 

 as rare in that locality, having obtained only two specimens in all 

 his experience there. 



The Librarian announced the following donations to the 

 Library : — Transactions and Proceedings of the Botanical Society 

 of Edinburgh, Vol. x,. Part i., from the Society. Transactions 

 of the Geological Society of Glasgow, Vol. iii.. Part ii., from 

 the Society. Transactions of the Wernerian Society of Edinburgh, 

 Vols, vi., vii., and Vol. viii., Part i., from the Koyal Physical 

 Society of Edinburgh. 



May 3Lst, 1870. 

 Mr David Robertson, F.G.S., in the chair. 



SPECIMENS EXHIBITED. 



Dr James Stirton exhibited specimens of Sphmromphah 

 (Verrucaria) Henscheliana, a lichen new to Britain, gathered by 

 himself on Ben Voirlich. 



The Chairman exhibited specimens, male and female, of Pagurus 

 Frideauxii, remarking that he had found the species in pairs for 

 some years past, first in the nets of the fishermen lifted from deep 

 water, and subsequently in the dredge, and along the shores of 

 Cumbrae at low spring tides. From these instances of apparent 

 attachment, he was inclined to think that this Hermit Crab pairs 

 for the season, and that the female, which is but half the size of 

 the male, may by this arrangement share the protection of the 

 powerful pincers of the stronger sex. 



The Rev. James E. Somerville, B.D., exhibited a specimen of 

 the Hooded Crow (Corvus comix) and its eggs, from Egypt, 

 regarding which Mr Gray observed that, when contrasted with 

 Scottish specimens, both the bird and its eggs appeared to be 

 much lighter in colour, a difference which might be owing to the 

 nature of its food, or the result of climatic influences. 



PAPERS READ. 



I. — On the Post-tertiary Clmj-heds at Kilchattan Pay, Island of Pute. 



By Mr Ja3IES Coutts. 



The late Mr Smith of Jordanhill was the first to call attention 



to the boreal shells contained in the Clyde beds, and to every 

 VOL. IL c 



