192 



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 southern 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: 



Coryiw piisilla 

 Tubularia indivisa 



— larynx 

 Clava imtUicornis 

 Mrrona coniiicopiac 

 Boitgaimnllia coiifrrta 

 Pcrigoiiiiniis rrpcns 

 Etidrndriuin rdiiiciiiu 



— W^righti 



— en pillar (' 

 Lafira duinosa 



— friiticosa 



— gracillinia 

 Graminaria srrpriis 



— ahiffiiia 

 Calycclla syriiiga 

 IlalrciuDi luiliciiiuiii 



— sent II III 



— mitricatum 



Halcciiuii labrosiiin 



— IciicUinn 

 Kirchriipaucria pi 11 11 a ta 

 Pill III II la ria Callia riiia 

 Polypluiiiaria fnitcsceiis 

 Nciiirrlcsia aiitriiiiiiia 



— raiiiosa 



Nciiiatocarpiis raiiiulifrriis 

 Cladocarpus foriiiosus 

 Thccocarpits iiiyriophylluin 

 St'rtiilan'lla tainarisca 



— triciispidata 



— polyzonias 



— Gayi 



— tcuclla 



— rugosa 

 Dipliasia fallax 



— rosacea 

 Dyuaiiit'ua piiiiiila 



A bictinaria abictiua 



— filicula 



— (?) fiisca 

 Scrtiilaria ciiprrssiua 



— tenera 

 Hydralliiiaiiia falcata 

 Thuja ria thuja 



— laxa 

 Ca III pa 11 Ilia ria volit bills 



— verticillata 



— Integra 



— Hincksi 



— fohiistoni 

 Laoiiicdca jlexiiosa 



geniculata 



— longissitna 



— livaliiia 



— gracilis 

 Bon 11 rviclla or a 11 dls 



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

 rcgahs, Coryiiiorpha glacialis, Coryviorplia grooilaiidlca, Liclorella piiiiiata^ and Sertularclla iiiirabilis: 

 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 the)' 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 F'aroe Islands, since they are found, and parth' also frequent, in 

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

 Cnspidclla humilis, Pliuiiiilaria sctacca, and Diphasia attcniiata. This, however probabh' by no means 

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

 or less sporadic visitors to the Faroe Islands. 



A compari.son between the fauna of the three areas .shows that the Greenland area includes 

 II species not known from Iceland or the Faroe Islands. The.se are: 



