364 Proceedings of the Royal Physical Society. 
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 include 
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 
