2 Proceedings of the Royal Physical Society. 364 



that it might be worth while to place the result in the hands 

 of my fellow-workers through the medium of this Society. 



The number of new species which have been created during 

 the past ten years is 79, and, as usually happens, the largest 

 genera have received the most numerous accessions. The 

 already unwieldy genus Octopus, for example, has been 

 enriched by 21 new names, and Sepia, another large genus, has 

 received 9 additions. The number of new genera described 

 is 9, all of which are based upon new species, whilst 3 iui lade 

 in addition species previously known. 



The new forms are in nearly all cases adequately described, 

 and in the majority of instances figured with sufficient 

 detail, so that there has been comparatively little room 

 for doubt as to their claim to specific distinction. In cases 

 of uncertainty I have adhered to the principle, mentioned 

 in my previous list, of not registering species as identical 

 without very strong evidence. In the case of a Catalogue 

 like the present, which makes no pretensions to monographic 

 completeness, less harm is done by letting two names stand 

 side by side than by hastily entering them as synonymous. 



Most of the novelties are from the eastern seas, and are 

 due to the investigations of Dr Ortmann into the Japanese 

 forms, of the late Dr Brock, whose untimely death deprived 

 zoological science of a promising worker in this interest- 

 ing field, and of Mr Goodrich, who has reported upon the 

 collections in the Calcutta Museum. 



It is, however, no injustice to these workers to say that 

 the most important systematic work on the Cephalopoda 

 which has appeared in recent years is the Monograph 

 which Dr Jatta has published in the "Fauna and Flora 

 of the Gulf of Naples." It is the result of more than ten 

 years work, and is based upon abundant material prepared 

 with all the resources which have rendered the Naples 

 station famous all over the world. The descriptions are 

 careful and elaborate, and there is a wealth of illustrations, 

 which should render it impossible in future to mistake any 

 of the species there enumerated. 



The arrangement of this Supplement is on the same lines 

 as that of the Catalogue. It has appeared desirable, on 



