THE MARINE FAUNA OF THE FALKLAND ISLANDS. 69 



Of the preceding species, two are cosmopolitan in shallow water and 

 are also found in some regions in deep water ; this fact is referred to 

 later. 



I. Microporella ciliata, on weed, among debris, and on Mytilus. 

 IT. Schizoporella hyalina, on weed and shell (Photinula). 

 It is noteworthy that both these forms occur on weed. 

 The following species are common to the northern hemisphere, in- 

 cluding Britain, and the Falklands : — 



I. Lepralia adpressa, on shells (Photinula violacea and Trophon 

 muricijormi^). 

 Habitat : Britain (Torbay, Guernsey, Hastings). Mediter- 

 ranean (Algiers, Naples, Bay of Gibraltar). Australia. 

 Chiloe. Falklands. Mazatlan. 

 Moderate to deep water. Fossil — Italian pliocene. 

 II. Membranipora membranacea. 



Habitat : Britain ; universal and abundant, Hvirlingsoe. 

 Hougesund (Norway). Koscoff. Finisterre (France). 

 Adriatic. New Zealand. Australia. 

 Range in time — coralline crag. Palaeolithic. 

 Occurs only in temperate seas and shallow water. 

 III. Microporella malusii. 



Habitat : Britain (widely distributed and abundant). Gull- 



maren. Bahusia, 10-20 fath. Bergen. Finmark (Norway). 



Greenland. Mediterranean. Adratic. France (S.W.). 



Black Sea. South Patagonia, 48 fath. Tierra del Fuego. 



Falklands. Valparaiso. New Zealand. 



Fossil — coralline crag, on Terebratula. Older pliocene (Castrocara). 



The following occur in north and south temperate seas, but not in 



Britain, nor the tropics : — 



I. Beania magellanica, growing on an Ascidian (Molgula 

 gregaria). 

 Habitat ; Adriatic. Australia, 2-10 fath. New Zealand. 



Kerguelen. Cape Horn. Falkland Islands. 

 It appears to occur only in shallow water. 

 II. Cellepora pustulata, on Patella venosa. 



Habitat: Island of Capri (Italy). Victoria (Australia). New 

 Zealand. Marion Island. 

 The specimen, though fairly large, is much water-worn. 



