DB Johnston's catalogue of bivalved shells. 79 



Venus cassina, Mya arenaria. 



fasciata. norvegica. Lyonsia striata, Tur- 



Gallina, ton. 



undata. Sphenia Sivainsonii. 



Venerupis perforans. Anatina pubescens, Ttirton. Amphi- 



puUastra. desma pubescens, Fleming. 



decussata. Amphisdesma album. 



virginea. Solen siliqua. 



ensis. 

 Pylorid^. pellucidus. 



Corbula striata. Hiatella rugosa.^ 

 Lutraria vulgaris. arctica. 



Mya truncata. 



The following species I have not met with : — 



Pecten sinuosus. Holy Island, Winch. 



Mytilus edulis, var. incurvatus. Holy Island, Winch. 



Isocardia Cor. " This exceeding rare shell in the British catalogue was 



taken by me alive in the Firth, near St Abb's Head." — LasJcey in 



Wern. Mem. i. 385. 

 Cardium rubrum. Holy Island, W. C. Trevelyan, Esq. 

 Amphidesma convexuni, Fleming. Mya declivis, Dillwyn. Holy Island, 



Winch. 

 Cytherea Guineensis. " Taken in deep water, off St Abb's Head, very 



rare. One specimen was taken alive." — Laslcey. 

 Venus subrhomboidea. Taken by Captain Laslcey, off St Abb's Head, in 



deep water, very rare. 

 Pholas Dactylus. Holy Island, Winch. 

 crispata. Holy Island, Winch. 

 Solen Legumen. Holy Island, Winch. 



In the preceding list I have followed the nomenclature of Dr Flem- 

 ing's "British Animals," except where the contrary is specified. Of 

 the species in italics, the empty shells only have been found, but the 

 others have occurred in a living or fresh condition. Few of them seem 

 to be abundant in our bay, but their apparent scarcity may be owing 

 to the want of proper means and opportunities of ascertaining their 

 locahties, for the di-edge has not been used, my specimens ha^dng been 

 picked from the refuse of fishing-boats, or on the shore after storms. 

 The Pecten Imeatus, P. spinosus, Lima f raff His, Area fusca, Kellia rubra, 

 Anatina jmlescens, Tellina crassa, Psammobia fiorida, Astarte compressa, 

 and Mya nonegiea, are, however, considered among our rarest species 

 by collectors in general, and in that respect are the most interesting in 

 the catalogue. 



The Mussel {Mytilus edulis) is our most plentiful species, and at cer- 

 tain seasons is brought to the market, many people being fond of them 

 when roasted or pickled ; and it is also occasionally used as a bait by 



^ Animal with two large syphonal tubes, united thi-oughout ; a small byssus 

 towards the anterior end. 



