KNIGHT : MARINE MOLLUSCA OF LOCH LINNHE. 233 



up, or the tide caused me to drift, it was my custom to make 

 for shallower water, cast anchor, sift out my debris^ and return 

 again to the sport. Nothing could be more enjoyable than 

 dredging in these northern lochs, with curious visitants such as 

 seals every now and then swimming around the boat, and with 

 a surrounding landscape of such a magnificent sweep of 

 mountains to gaze upon. 



The most interesting result of the work was the discovery 

 of a great number oi Rissoa ahyssicola (Forb.) in eleven, fourteen, 

 and twenty-four fathoms. Forbes gave this beautiful shell this 

 'abyssal' title from the fact that he had found it only at great 

 depths, but the sand and gravel bottom at Onich had many 

 living specimens, perhaps most abundantly at the twelve fathom 

 line. Many years ago Frank Buckland, in company with Rev. 

 Dr. Stewart (the well-known ' Nether-Lochaber '), dredged 

 this neighbourhood and thought they had finished its resources, 

 Buckland particularly being struck with the fact that not a single 

 Peden valve was found. Dr. Stewart, however, remarked to 

 me that somehow or other I had ' simply walked between their 

 legs and found treasures which had escaped them,' a fact 

 which shews how we should never despair of any locality, 

 however well worked. 



Mr. J. T. Marshall, of Torquay, has very kindly examined 

 and identified the minuter forms, and once more proved the 

 courtesy for which he is well known. 



In the following list of species obtained by dredging and 

 otherwise, the arrangement followed is that of Jeffreys' ' British 

 Conchology.' 



Anomia ephippium L. Valves. 

 Ostrea edulis L. Valves, Cuilchenna Point. 

 Pecten pusio (L.). Loch Leven Ferry. 

 P. varius (L.). 14 fathoms. 

 P. opercularis (L.). Valves. 

 P. septemradiatus Miill. Valves. 

 P. maximus (L.). Valves, Cuilchenna Point. 



