46 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



specimens is given in Mr. Smith's well-known book 

 Benderloch. 



Isocardia cor is reported to have been also met 

 with off lona, but, be this so or not, the species is 

 evidently of more frequent occurrence in the Firth 

 of Lorn and its tributary lochs than has been 

 supposed. Dr. Murray, indeed, says : "I do not 

 think they (Isocardice) are at all so very rare in 

 the deepest holes around our western coasts." 



As to our own estuary, it is remarkable that 

 although the Clyde, as we are aware, has for forty 

 years been a favourite and well-worked dredging- 

 ground, it was not until fourteen months ago that 

 this large organism was ascertained to have a habitat 

 in the waters that wash our own immediate shores. 



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