1 92 



HYDROIDA II 



We have thus reached a total of 91 species certainly known. The nature of the additions is 

 not uninfluenced by the fact that the investigations were largely carried out on the deeper slopes of 

 the coastal banks, so that sovithern and eurytherm species form the majority of the species thus added 

 to the fauna list of the island. 



We now come to the fauna of the Faroe Islands area. The species from here which are included 

 in the material cover the entire range of our present knowledge as to the hydroid fauna of this sec- 

 tion. We have here the following 57 species: 



Coryne pusilla 

 Ttibularia indivisa 

 larynx 



Clava multicornis 

 Merona cornucopiae 

 Bougainvillia conferta 

 Perigonimus repens 

 Eudendrium rameum 

 Wrighti 

 capillarc 

 Lafcea dumosa 



fruticosa 



gracillima 

 Grammaria serpens 



abietina 



Calycella syringa 

 Halecium halccinum 



scutum 

 miiricatum 



Haleciiim labrosuin 

 tenellum 



Kirchenpaueria pinnata 

 Plumularia Catharina 

 Polyplumaria frutescens 

 Nemertesia antennina 



ramosa 



Nematocarpus rainulifcrus 

 Cladocarpus formosus 

 Thecocarpus myriophyllum 

 Sertularella tamarisca 



tricuspidata 



polyzonias 



Gayi 



tenella 



rugosa 

 Diphasia fallax 



rosacea 

 Dynamena pumila 



Abietinaria abietina 

 filicula 

 (?) fusca 

 Sertularia cupressina 



tenera 



Hydrallmania falcata 

 Thujaria thuja 

 laxa 

 Campanularia volubilis 



verticillata 

 integra 

 Hincksi 

 Johnstoni 

 Laomedea flexuosa 

 geniculata 

 longissima 

 hyalina 

 gracilis 

 Bonnemella grandis 



Along the deepest portions of the slope of the banks, the following five were found: Tubularia 

 regahs, Corymorpha glacialis, Corymorpha groenlandica, Lictorella pinnata, and Sertularella mirabilis; 

 save for the last but one, all of these belong to the cold area; finds lie so far out in the periphery 

 that it is doubtful whether they should really be counted as belonging to the fauna of the Faroe 

 Bank. If we do so, then we have up to now 62 species recorded from the Faroe Islands sec- 

 tion, but the number will doubtless be increased by further study. We must at any rate expect to 

 find the following six species at the Faroe Islands, since they are found, and partly also frequent, in 

 Iceland waters and round the British Isles: Coryne Sarsii, Corymorpha nutans, Hydractinia cchinata, 

 Cuspidella humilis, Plumularia setacea, and Diphasia attenuata. This, however probably by no means 

 exhausts the list of species, and in particular we may expect to find more southern forms as more 

 or less sporadic visitors to the Faroe Islands. 



A comparison between the fauna of the three areas shows that the Greenland area includes 

 ii species not known from Iceland or the Faroe Islands. These are: 



