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Sertularia polyzonias I Linne I 101 



Gayi (Lamourouxl 102 



tenella (Alder ) 104 



— fusiform is Hill cks 105 



rugosa (Linne).. 106 



Diphasia Agassiz 107 



Diphasia fallax (Johnston) 108 



Wandeli Levins en 1 1 1 



rosacea ( L i n n e ) 112 



attenuate* Hi neks 113 



alatti Hi 11 Cks 114 



Dynamena (Lamouroux) 114 



Dynamena pumila (Linne) 115 



Abietinaria (Kirch enpauer) 116 



Alictinaria abietina (Linne) 1 17 



fihcula (Ellis et Solander) 119 



— (l)fusca 1 J o h n s to n I 120 



Sertularia (Linne) 1 22 



Sertularia cupressina Linne 124 



tenera G. 0. Sars 127 



Fabricii L e v i 11 s e n 1 30 



— (?) tubuliformis (M ark tan 11 er-Tu rneret- 



sc her) 132 



mirabilis ( V e r r i 1 1 ) 1 33 



Hydrattmania H i 11 c k s 1 34 



Hydrallmama falcata (Linne) 135 



Thujaria (Fleming) 138 



Thujana thuja (Linne) 139 



sp. aff. hippuris A 11m an T41 



laxa Allman 142 



alternitheca Levinsen 143 



— variabilis now nom 145 



— lonchitis (Ellis et Solander) 146 



— canca Levinsen 148 



t sp. aff. distans Fras er 14S 



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Family series Proboscoida 149 



Family Campanulariidce 149 



Campanulana (Lamarck ) 153 



Campanularia volubilis (Linne) 153 



verticillata | Li n 11 e I 155 



groenlandica Levinsen 157 



speciosa Clark 158 



Integra Mac Gillivray 159 



Hincksi Alder 162 



Johnstoni Alder 163 



Laomcdca Lamouroux 164 



Laomedea jiexuosa Alder 165 



— geniculata (Linne) 166 



longissima (Pallas) 167 



hyalina (Hincks) 169 



— gracilis M. Sars 170 



Bonneviella Broch 172 



Bonneviella grandis (All man) 173 



III. Addenda to the Athecate Hydroida 174 



Corynwrpha nutans M. Sars 174 



— groenlandica (Allman) 174 



Family Branchiocerianthidtz 174 



Branchioccrianthus Mark 174 



Branchiocerianthus reniformis now sp 176 



IV. Zoogeographical observations on the Hydroid Fauna 



of the North Atlantic 1 7S 



V. List of the genera treated, and type-species 195 



Literature 197 



VI. Index 201 



Errata 206 



