52 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Hanley). x^scends the English Channel ; ranges along the 

 coasts of Spain and Portugal to the Canaries. 

 Occurs fossil in the Crag deposits, in the Clyde beds, and in 

 Ireland, Italy, and France. 

 Pecten variiis, Lam. 



On all our coasts, and those of France, Spain, Portugal, and 



Mediterranean. 

 Is not found in the Crag deposits, and sparingly in Pleisto- 

 cene beds (Forbes and Hanley) ; abundant in Italian and 

 Sicilian beds. 

 Pecten polymorphus, Bronn. See Philippi, Enum. Moll. Sic. 



Ranges from Lisbon South ; common in the Mediterranean ; 



in Mr. M 'Andrew's list of Madeira species. 

 Fossil in Italian and Sicilian beds. 



Note. — This interesting shell was identified by Mr. G. B. 

 Sowerby. 

 Nucula margaritacea. Lam. : iV. nucleus, Linn. 



Common; with a wide European range ; Mediterranean, West 



Africa. 

 Scarce in Cor. Crag ; common in Red Crag. 

 Cardium edule, Linn. 



Cardium tuberculatum^ Lam. [rusticuniy Linn.] (Forbes and Han- 

 ley). 



** Essentially a Southern species." — Forbes and Hanley. 

 Not in the Crag deposits. 

 Cardium exiguum, Mont. 



" More Southern than Northern ;" ranges along the Western 

 coasts of the British Islands. In the Mediterranean and 

 iEgean. 

 Has not been found in the Crag. 

 Lucina borealis, Linn.=i. radula, Lam. 



A widely distributed Northern species, but does not appa- 

 rently range as far South as the coasts of Spain. — M 'Andrew. 

 Not noticed by Philippi as living in Mediterranean. 

 Common in Crag of the Germanic area, and in some marine 

 beds near Valogres. In Italian and Sicihan beds ? 

 Venus verrucosa, Linn. 



A South-coast specimen ; abundant about the Channel Islands, 

 and occurs as high as Little Hampton. On coasts of Por- 

 tugal, Mediterranean, and Canaries. 

 Was not in the German Ocean area at the time of the 



Crag. 

 Occurs in the marine beds of Wexford. 

 Tapes pullastrUy Wood. 



British Coasts, Channel Islands, and North coast of Spain. 

 Littoral species, not found in the Crag. 

 Tapes decussata, Linn. 



More common on the South-west portion of our coast than 

 elsewhere ; ranges South but not North of the British 

 Islands. — Forbes and Hanley. Common in Mediterranean. 



