378 



TABLE OF DISTRIBUTION. 



Species. 



c 



Pm 



- 



o 



Conchifera {continued). 



Venerupis Irus 



Gastrochama dubia 



Pholas dactylus 



Candida 



parva 



crispata 



Pholadidea papyracea . . . 



Xylophaga dorsalis 



Teredo Norvegica 



navalis 



pedicellata 



megotara 



38 



Solenoconchia. 



Dentaliuni entalis 

 Tarentinuni 



2 



Gasteropoda. 



Chiton fascicular is . . 



discrepans 



Hanleyi 



cancellatus 



cinereus 



albus 



marginatus 



ruber 



leevis 



marmoreus 



Patella vulgata 



Helcion pellucidum . . 

 Tectura testudinalis . . 



virginea 



36 



2 



a 

 u 

 <a 



X 

 -u 

 S 



o 



35 



9 



U 8 

 B 



29 



Extra-European localities. 



North Africa and Canaries. 

 North Africa, Madeira, and 



Canaries. 

 North Africa. 

 North Africa. 

 North Africa. 

 Both sides of North America, 



North Africa. 



North Africa and North-east 



America. 

 North Africa. 

 Greenland and North-east 



America. 



Both sides of North America. 

 North Africa. 



North Africa and Canaries. 

 North Africa. 

 West Indies ? 



North Africa and Greenland. 

 Greenland and North-east 



America. 

 North Africa and both sides 



of North America. 

 Greenland and North-east 



America. 

 North Africa. 

 North-east America, 

 North Africa. 

 North Africa. 

 Nova Zembla, Greenland, and 



North-east America. 

 North Africa, Canaries, and 



Azores. Sitka I. ? 



