HANDBOOK OF SHELLS. 



6l 



No, ot 



t-amily. Genus. Species. 

 15. Cyprina i 



21. 



23. 



40 

 5 



54 

 176 

 113 

 100 



Circe 

 Isocardia 

 Cardita 

 16. Venus 

 Cytherea 

 Artemis 



Tapes 



Venerupis 20 



17. Mactra 125 

 Lutraria 18 



18. Tellina 300 

 Psammobia 50 



Sanguinolaria 20 



Semele 60 



Donax 68 



19. Solen 33 

 Solecurtus 25 



20. Mya 

 Corbula 



Anatina 50 



Thracia 17 



Pandora 18 



22. Gastrochaena 10 

 Saxicava 



Aspergillum 21 



Pholas 32 



Xylophaga 2 



Teredo 14 



Distribution. 

 From Britain to the most northerly point yet reached 



from 5 to 80 fathoms. 



Britain, Australia, India, Red Sea 8 to 50 fathoms. 

 Mediterranean, China, Japan burrowing in sand. 

 Tropical seas from shallow water to 150 fathoms. 

 ") World-wide buried in sand, from low water to 100 

 ) fathoms. 

 Northern to tropical seas from low water to 100 



fathoms. 

 Widely distributed burrowing in sand, from low water 



to 100 fathoms. 



Britain, Canaries, India, Peru in crevices of rocks. 

 World-wide burrowing in sand. 

 Widely distributed burrowing in sand. 

 In all seas from the shore line to 15 fathoms. 

 Britain, Pacific and Indian Oceans from the littoral 



zone to 100 fathoms. 

 W. Indies, Australia, Peru. 

 Brazil, India, China, etc. 



Norway, Baltic, Britain in sand near low water mark. 

 World- wide burrowing in sand. 

 Britain, Africa, Madeira, Mediterranean burrowing 



in sand. 

 North Seas, W. Africa, Philippines, etc. river mouths 



from low water to 25 fathoms. 

 United States, Britain, Norway, Mediterranean, W. 



Africa, China from 15 to 80 fathoms. 

 India, W. Africa, Philippines, New Zealand. 

 Greenland to Canaries and China from 4 to 120 



fathoms. 

 Spitzbergen, Panama, India from 4 to no fathoms, 



burrowing in sand and mud. 

 W. Indies, Britain, Red Sea, Pacific Islands from 



shore line to 30 fathoms. 

 Arctic Seas, Britain, Mediterranean, r Canaries and the 



Cape in crevices and boring into limestone and rocks. 

 Red Sea, Java, New Zealand in sand. 

 Almost universal from low water to 25 fathoms. 

 Norway, Britain, S.America boring into floating wood. 

 In tropical seas from low water to 100 fathoms. 



