120 
Records of the Australian Museum (2017) Vol. 69 
Table of contents 
Introduction . 121 
Distribution . 122 
Material and methods . 124 
Abbreviations . 125 
Overview of classification . 126 
Review of biology of Janthina and Recluzia . 128 
Float and formation of bubbles . 128 
Reproduction and larvae . 134 
Protoconchs . 135 
Spermatozeugmata . 135 
Egg capsules and brooding . 135 
Lack of operculum and obvious eyes . 137 
Radula and subdivided buccal mass . 137 
Epipodia . 138 
Ianthinin purple dye . 139 
Feeding and prey . 140 
Independent evolution of the neustonic habit in Janthina and Recluzia . 140 
The fossil record . 142 
The succession on Santa Maria Island . 142 
Other Atlantic islands: Madeira, Selvagem Grande, Gran Canaria . 146 
The succession in New Zealand . 146 
The succession in southern Australia . 153 
The succession in Japan . 155 
Overview of time ranges . 157 
Evolutionary history . 158 
Phylogeny . 159 
Systematic revision . 161 
Epitoniidae Berry, 1910 (1812) . 161 
Janthina Roding, 1798 . 161 
Included species . 163 
Taxa not included . 163 
Nomina nuda . 164 
Janthina typica (Bronn, 1861) . 165 
Janthina krejcii sp. nov. 173 
Janthina chavani (Ludbrook, 1978) . 175 
Janthina globosa Swainson, 1822 . 181 
Janthina janthina (Linnaeus, 1758) . 185 
Janthina exigua Lamarck, 1816 . 191 
Janthina pallida Thompson, 1840 . 194 
Janthina umbilicata d’Orbigny, 1841 . 196 
Recluzia Petit de la Saussaye, 1853 . 198 
Putative fossil record . 198 
Names proposed in Recluzia . 198 
Dimensions and species of Recluzia . 199 
Recluzia johnii { Holten, 1802) . 201 
Recluzia lutea (Bennett, 1840) . 203 
Conclusions . 208 
Appendix . 208 
Acknowledgments .209 
References .209 
