PREFACE. 



THE study of the Bryozoa having been carried on by 

 many naturalists in various parts of the world, it 

 has followed as a natural result that more than one name 

 has been given to a single species, as a reference to the 

 cosmopolitan forms of ' Microporella Malusii' and 'Micro- 

 porella ciliata ' will abundantly testify ; as also, that one 

 name has fallen to the lot of two or three different species, 

 e.g., ' Stomatopora expansa' of Hincks, and * Stomatopora 

 expansa ' of Packard ; the ' Salicornaria gracilis ' of Busk, 

 and the * Salicornaria gracilis ' of Costa, and others. Such 

 a result becomes an endless source of trouble, and this 

 Catalogue is the outcome of this trouble, and aims at 

 bringing into view all the names of published recent 

 Bryozoa, with as full a synonymy as may be possible. 

 Originally begun for my own private use, it has grown to 

 its present proportions as the material for a synonymic 

 catalogue constantly increased. 



Two chief ideas have been kept in view. The first 

 was to collect in a workable form all the names of recent 

 Bryozoa that have been published, so far as books and 

 scattered papers could be obtained. Hupe, Quoy and 

 Gaimard, Audouin's Explication, and Michelin's Mauritius, 

 are among the works I have failed in procuring. The 

 second idea was to reduce the synonymy to something like 

 * fact,' including in such synonymy only the fossil forms 

 belonging to recent species. To have dealt with the purely 

 fossil forms would have involved another ten years of life 



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