Page 



Sertularia polyzonias ( Linne ) 101 



Gayi (Lamouroux) 102 



tenella (Alder) 104 



fusiformis Hincks 105 



rugosa (Linne) 106 



Diphasia Agassiz 107 



Diphasia fallax (Johnston) 108 



Wandeli Levinsen . 111 



rosacea (Linne) 112 



attemtata Hincks 113 



alata Hincks 114 



Dynamena (Lamouroux) 114 



Dynamena pumila (Linne) 115 



Aiietinaria ( Kirchenpauer) 116 



Abietinaria abietina (Linne) 117 



Jilicula ( Ellis et Solander) 119 



(?)fusca (Johnston) 120 



Sertularia (Linne) 122 



Sertularia ciipressina Linne 1 24 



tenera G. O. S a rs 127 



Fabricii Levinsen 130 



(?) tubuliformis (M arktanne r-T u r n e r e t- 



scher) 132 



mirabilis ( Verrill) 133 



Hydrallmania Hincks 134 



Hydrallmania falcata (Linne) 135 



Thujaria (Fletnin g) 138 



Thujaria thuja (Linne) 139 



sp. aff. hippuris Allman 141 



laxa Allman 142 



alternitheca Levinsen 143 



variabilis nov. nom 145 



lonchitis (Ellis et Solander) 146 



carica Levinsen 148 



sp. aff. distans Fraser 148 



Family series Proboscoida 149 



Family Campanulariida 149 



Campamilaria (Lamarck) 153 



Campanularia volubilis (Linne) 153 



verticillata (Linnel 155 



groenlandica Levinsen 157 



speciosa Clark 158 



Integra Mac Gillivray 159 



Hincksi Alder 162 



Johnstoni Alder 163 



Laomedea Lamouroux 164 



Laomedea flexiiosa Alder 165 



genicnlata (Linne) 166 



longissima (Pallas) 167 



hyalina (Hincks) 169 



gracilis M. S a rs 170 



Bonneviella Broch 172 



Bonneviella grandis (Allmau) 173 



III. Addenda to the Athecate Hydroida 174 



Corymorpha nutans M. Sars 174 



groenlandica (Allman) 174 



Family Branchiocerianthida 174 



Branchiocerianthtts Mark 174 



Branchiocenanthits reniformis nov. sp 176 



IV. Zoogeographical observations on the Hydroid Fauna 



of the North Atlantic 1 78 



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



Literature 197 



VI. Index 201 



Errata . . 206 



