HYDROIDA II 



I 9 I 



Lafoea pygmcea 



— gracilli»Ki 



— pocillum 



— symmetrica 



— fruticosa 

 Filellum serpens 

 Lie tor rlli 1 Levinseni 

 Sertularia cupressina 



argentea 

 — pit)) lilt 1 



Diphasia fusca 



— abietina 

 Antennularia antennina 



Lafcea gracillima 



Lafcca fruticosa forma gennina and forma grandis 



Grammaria serpens 

 Zygophylax biarmata 



Sertularia cupressina 



Dynamena pumila 

 Abietinaria (?) fusca 

 A bietin a ria filicula 

 Nemertesia antennina 



ramosa 

 Plumularia pinnata 



= ramosa 



= Kirchenpaueria pinnata 

 gracillima = Polynemertesia gracillima 



= Poly pluma ria frutescens 

 = Thecocarpits myriopkyllum 

 = Cladocarpus integer 



— frutescens 



Thecocarpus radicellatus 

 Cladocarpus Holmi 



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

 1911) notes Turn's neglecta Lesson, which here probably represents a young colony of Clava multi- 

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

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

 Perigonimus repens. Altogether, we have then to reduce the 90 species noted by Saemundsson 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 "Thuja ria lou chit is" specimens of Thuja ria iouchitis, Thujaria laxa, Thujaria altemithcca, and 

 Thujaria carica, while under "Laomedea flcxuosa" we find labelled, besides specimens actually belonging 

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

 cimens of Laomedea longissima are distributed under the names of Laomedea flcxuosa^ Laomedea long- 

 issima, and Laomedea gelatinosa -- 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 

 Halicorna ria ca mpa 11 ulata 

 Nematocarp us ra m uli ferns 

 Aglaophenopsis cornuta 

 Cladocarpus formosus 



Cladocarpus bicuspis 

 Serhtliirella amphorifera 

 Diphasia attenuata 

 Thujaria altcrnitheca 



