386 



APPENDIX. 



Indies ; so that the present collection does not present any 

 peculiar AustraUan generic form. It is far otherwise, how- 

 ever, with respect to the species. Of these three only are 

 found in the European seas, viz. : 



Sertularia operculata. 

 Campanularia dumosa. 

 „ volubilis ? 



Of which the first is a perfect cosmopolite, and the last 

 is perhaps douhtfiil. 



There are also, what is much more strange, not iriore 

 than three species which I have been enabled to trace to 

 any other locality, even in the Southern hemisphere. These 

 are : — 



Sertularia elongata. 



„ divaricata, n. sp. 

 Plumularia Macgillivrai, n. sp. 



The first occurring in New Zealand ; the second on the 

 south coast of Patagonia and in the Straits of Magellan ; 

 and the third (which, however, is not, strictly speaking, an 

 Australian form, having been procured in the Louisiade 

 Archipelago) in the Philippine Islands. With these sis 

 exceptions, the whole number of species would therefore, 

 to a certain extent, appear to<be characteristic of the 

 Austrahan seas. 



Of the thirty-one species, it appears strange that not less 

 than twenty-five should here be described as new; and there 

 can be no doubt many so described are included under the 

 vague and uncertain descriptions of Lamarck and Lamou- 

 roux ; but, in the absence of authentic specimens, or 

 trustworthy figures, I have found it impossible to identify 

 satisfactorily the species described by them, and have 

 therefore thought it better to assign new names rather 

 than to apply former ones, which would in aU probability 

 prove incorrect. It is hoped, at all events, that the 

 descriptions here given wiU be found sufficient to prevent 



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