ITTSITANIAN PEOTINCE. 



63 



The following are at present peculiar to Britain : — 



sp. 

 sp. 



Assiminea, 

 Jeffreysia, 

 Otina Otis. 

 Eissoa, sp . 

 Stj'lif er turtoni. 



Odostomia, 19 sp. 9 

 Buccimun fusiforme. 

 Fusus Berniciensis. 



„ Turtoni. 

 Natica Kingii. 



The most common edible species are :- 



Ostrea edulis. 

 Pecteu maximus. 

 „ opercularis. 



Mj'tilus edulis. 

 Cardium edule. 

 Buccinum imdatum. 



Montacuta f erruginosa. 

 Argiope cistellula. 

 Pecten niveus. 

 Syndosmya tenuis. 

 Thracia vUlosiuscula. 



Fusus antiquus. 

 Littorina littorea. 



Am.ongst the species characteristic of the Celtic province — or 

 most abundant in it — are the following : — 



Trophon muricatus. 

 Nassa reticulata. 

 Natica Montagui, 



„ monilifera, 



„ nitida. 

 Velutina laevigata. 

 Turritella communis. 

 Aporrbais pes-pelecani. 

 Eissoa cingillus. 

 Scalaria Trevelyana. 



Littorina littoralis. 



Trochus Montagui. 

 „ millegranus, 

 „ tumidus. 



Patella vulgata. 

 „ pellucida, 



Acmsea virginea. 



Chiton cinereus. 



Scaphander lignarius, 



Tellina crassa, 



Venus striatula. 



„ casina. 

 Ponax anatinus. 

 Solen ensis. 

 Pholas Candida. 

 Mactra elliptica. 



„ solida 

 Periploma prsetenuis. 

 Tliracia distona. 

 Syndosmya prismatica. 



The wide expanse of the Baltic affords no shell-fish unknown 

 to the coasts of Britain and Sweden. The water is brackish, 

 becoming less salt northward, till only estuary shells are met 

 with, and the Littorinse and Limnseans are found living to- 

 gether, as in many of our own marshes. This scanty list is 

 taken from the Memoirs of Dr. Middendorff and M. BoU. 



Buccinum undatum. 

 Purpura lapiUus. 

 Nassa reticulata. 

 Littorina littorea. 

 Patella (tarentina). 

 Hydrobia muricata. 



Neritina fluviatilis. 

 Limnaea auricularia. 



„ ovata. 

 Mytilus edulis. 

 Donax (trunculus). 

 Cardium edule var. 



Tellina Balthica. 



„ tenuis. 

 Scrobicularia piperata. 

 Mya arenaria. 

 „ truncata. 



Meyer and Mobius collected the following species at Kiel : — 



Chiton cinereus. 

 Acmssa testudinalis. 

 Eissoa labiosa. 



„ inconspicua. 



„ ulvae. 



- ventrosa. 



Eissoa parva. 

 Littorina littorea. 



„ littoralis. 



„ tenebrosa. 

 Lacuna vincta. 

 „ pallidula. 



Cerithium reticulatum. 



Nassa reticulata. 

 Buccinum undatum. 

 Fusus antiquus. 



IV. LusiTANiAjq- Peovince. 



The shores of the Bay of Biscay, Portugal, the Mediterranean, 

 and N. W. Africa, as far as Cape Juby, form one important 

 province, extending westward in the Atlantic as far as the Gulf- 



