152 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



common in material dredged by the Medusa in lower 

 Loch Fyne at a depth of 100 fathoms, as well as in 

 material that I have from Ireland. 



On looking over material dredged by the Medusa 

 off Skate Island, at the mouth of Loch Fyne, in 90 

 to 100 fathoms, I found a few specimens of Sijjhon- 

 entalis affinis (Sars) new to Britain. It may be 

 readily mistaken for S. lofotensis, but the shell is 

 thinner, smooth, pellucid, and wants the oblique 

 striations of that species. 



In the same material, among other shells not 

 common, I found Axinus croulinensis. Having had 

 specimens of this shell kindly given me by Mr. A. 

 Somerville, Glasgow, I could readily satisfy myself 

 of its identity. 



On the shore between tide-mark we occasionally 

 find shells and other animals hitherto unnoticed or 

 doubtfully authenticated. Littorina neritoides was 

 recorded by the Rev. A. M. Norman as having 

 occurred on the rocks of the Outer Allans, Millport; 

 but although carefully looked for, it had not been 

 subsequently found until two years ago, when it 

 was taken abundantly on rocks on the east side of 

 Kames Bay, Millport, by Dr. J. R. Henderson, and 

 on the rocks near the Battery by Mr. Cook, an 

 English gentleman then visiting C umbrae. 



My a arenaria var. lata has been taken in the Firth 

 of Forth and at Oban ; and although not recorded 

 from the Firth of Clyde, it is quite abundant in a 

 patch of small stones, mud, and sand, about half- 

 tide mark, a short distance eastward from Mr. Charles 

 Wallace's private pier, C umbrae. 



Last summer one of my grandchildren found a 

 specimen of Donax vittatus, at low- water, Kames 

 Bay, Cumbrae ; the shell had the two valves con- 

 nected, but was empty. A month or two later 

 another specimen" was found under precisely similar 

 conditions. Although in both cases the animal was 

 absent, yet the fact that the valves were connected 

 together led me to believe that the species must 



