V1 INTRODUCTORY REMARKS. 
New Zealand, &c.), and M. M. Jacquinot and Lucas, (Crustacea 
of the Voyage au Pole Sud). 
By the kind permission of Dr. Giinther, I have been enabled 
to amend, where necessary, the descriptions of White and 
other authors from the type specimens, and to describe the new 
or undescribed species in the National Collection, to indicate 
those which are at present desiderata, and to add some remarks 
on the geographical range of each species. The measurements 
are often made from specimens inthe British Museum Collection, 
and can only be taken as indicating the ordinary size of the 
species, as many of the higher Crustacea increase very greatly 
in size after becoming adult. 
The following summary, necessarily very imperfect, will serve 
to indicate the principal geographical affinities of the New 
Zealand Crustacea, so far as they are at present known. 
New Zealand is situated almost on the southern line of 
demarcation between the two great geographical regions, which 
Dana has called the Oriental and Antarctic Kingdoms, the 
former including the whole of the Hastern coast of Africa, the 
South and Hast of Asia, Australia, and certain islands of the 
Pacific ; the latter, the Southern extremity of the American 
continent, the islands adjacent, Southern New Zealand, and the 
lands and islands of the Antarctic Seas. Thus we find species 
inhabiting its shores, which are properly characteristic of either 
of these regions. 
I. Tae OrienraL Kinagpom:—Some of the species of 
the Decapoda, (especially the Brachyura), included in this 
Catalogue, are found throughout the whole or nearly the whole 
extent of this vast region ; instances are :—Actaea granulata, 
Daira perlata, Neptunus pelagicus, Scytta-serrata, Thalamita 
sima, Calappa hepatica, Palaemon ornatus. There are other 
species whose range appears to be more particularly restricted 
