HYDROIDA II 



Lafoea pygvura 



gracilliniti 



pocillum 



symmetric^ 



fruticosa 

 File Hum serpens 

 Lictorella Levinseni 

 Sertularia cupressina 



argentea 

 pumila 

 Diphasia fusca 



abietina 

 Antennularia antennina 



ramosa 

 Plumularia pinnata 



gracillima 

 frutescens 



Thecocarpus radiceilatus 

 Cladocarpus Holmi 



\ 



La/a-a gracillima 



= Lafce.a fruticosa forma genuina and forma grandis 



Gram m aria serpens 

 = Zygophylax biarmata 



= Sertularia cupressina 



= Dynamena pumila 

 = A bietinaria (?) fusca 

 = Abietinaria filicula 

 = Nemertesia antennina 



ramosa 



= Kirchcnpaueria pinnata 

 = Polynemertesia gracillima 

 = Polyplumaria frutescens 

 = Thecocarpus myriophylhini 



Cladocarpus integer 



The synonyms noted reduce the number of species by 9; furthermore, Ssemundsson (1902, 

 1911) notes Turris neglecta Lesson, which here probably represents a young colony of Clava mulli- 

 cornis, and Diplura fritillaria (Haeckel) = Corync fritillaria Steenstrup, an altogether uncertain species 

 (cf. Part I, p. 23). Renewed investigations must also decide what species is concealed under the name 

 Perigonimus rcpens. Altogether, we have then to reduce the 90 species noted by Ssemundsson to 

 a certain 77. But the geographical details for these species are highly uncertain, as the determina- 

 tion has on revision often proved erroneous. In the revised collections, for instance, we find under 

 the old label "Thujaria lonchitis" specimens of Thujaria lonchitis, Thujaria laxa, Thujaria alternitheca, and 

 Thujaria carica, while under ''Laomedea flexuosa^ we find labelled, besides specimens actually belonging 

 to that species, also others of Laomedea geniculata and Laomedca longissima. On the other hand, spe- 

 cimens of Laomedea longissima are distributed under the names of Laomedea ftexuosa, Laomedea long- 

 issima, and Laomedea gelalinosa -- taking examples at haphazard. The details are apparent from the 

 notes under the separate headings. Even though the detailed records thus leave much to be desired, 

 we have nevertheless a pretty fair survey of the species comprised under the area as a whole. The 

 investigations have now added the following 14 new species to the list: 



Corymorpha groenlandica 

 Hydractinia Sarsii 

 Stegopoma plicatile 

 Halecium scutum 

 Polyplumaria flabellata 



Polyplumaria profunda 

 Halicornaria campanulata 

 Nematocarpus ramuliferus 

 Aglaophenopsis cornuta 

 Cladocarpus formosus 



Cladocarpus bicuspis 

 Sertularella amphorifera 

 Diphasia attenuata 

 Thujaria alternitheca 



