LtJSITANIAN PEOYINCE. 



63 



The following are at present peculiar to Britain : — 



Assiminea, sp. 

 Jeffreysia, sp, 

 Otina oris. 

 Kissoa, sp . 

 Stylifer turtoni. 



Odostomia, 19 sp. ? 

 Buccinum fusiforme. 

 Fusus Berniciensis. 



„ Turtoni. 

 Natica Kingii. 



Montacuta femiginosa. 

 Argiope cistelliila. 

 Pecten niveus. 

 Syndosmya tenuis. 

 Thracia villosiuscula. 



The most common edible species are : — 



Ostrea edulis. 

 Pecten maximus. 

 „ opercularis. 



Mytilus edulis. 

 Cardium edule. 

 Buccinum undatiuM. 



Fusus antiquus, 

 Littorina littorea. 



Amongst the species characteristic of the Celtic province — or 

 most abundant in it — are the foUowino: : — 



Trophon muricatus. 

 Nassa reticulata. 

 Natica Montagui. 



„ monilifera. 



„ nitida. 

 Velutina laevigata. 

 Turritella communis. 

 Aporrhais pes-pelecani. 

 Bissoa cingillus. 

 Scalaria Trevelyana. 



Littorina littoralis. 

 Trochus Montagui. 



„ millegranus. 



„ tumidus. 

 Patella vulgata. 



„ pellucida. 

 Acmsea virginea. 

 Chiton cinereus. 

 Scaphander lignarius. 

 Telliua crassa. 



Venus striatula. 



„ casina. 

 Donax anatinus. 

 Solen ensis. 

 Pholas Candida. 

 Mactra elliptica. 



„ solida 

 Periploma prsetenuis. 

 Tliracia distorta. 

 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 Littorinee 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. 

 Pui-pura lapilhis. 

 Nassa reticulata. 

 Littorina littorea. 

 Patella (tarentina). 

 Ilydrobia muiicata. 



Neritina fluviatilis. 

 Limna:a auricularia. 



„ ovata. 

 Mytilus edulis. 

 Donax (trunculus). 

 Cardium edule var. 



Tellina Balthica. 



„ tenuis. 

 Scrobiculai'ia piperata. 

 Mya arenaria. 

 „ truncata. 



Meyer and Mobius collected the following species at Kiel 



Chiton cinereus. 

 Acmssa testudinalis. 

 Bissoa labiosa. 



„ inconspicua. 



„ ulvae. 



M ventrosa. 



Eissoa parva. 

 Littorina Uttorea. 



„ littoralis. 



„ tenebrosa. 

 Lacuna vincta. 

 „ pallidula. 



Cerithium reticulatum. 

 Nassa reticulata. 

 Buccinum undatum, 

 Fusus antiquus. 



IV. LUSITANIAJS" PbOVINCE. 



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- 



