vil INTRODUCTORY REMARKS. 
On the other hand, the Matoidea are, it would seem, far less 
numerous in New Zealand than in Great Britain ; while of the 
Grapsoidea, which are remarkably represented both in number 
and variety of species in the New Zealand Fauna, there are 
but two or three species properly indigenous to Gréat Britain. 
No Land-Crab of the family Telphuside inhabits New 
Zealand. The Paratelphusa tridentata, M. Hdw., included 
doubtfully in its Fauna, has since been shown to inhabit the 
East Indian Archipelago. The Cray-fish of the genus Para- 
nephrops, are, I believe, restricted to New Zealand ; where they 
seem to supply the place of the Australian Charaps and Engeus. 
I may add in conclusion, that there are a few species, whose 
range does not appear to be restricted to any well-defined geo- 
graphical area. Instances are the pelagic and almost cosmopol- 
itan Planes minutus‘and Palaemon natator,; also, Grapsus-pictus 
and Leiolophus planissimus. 
As this Catalogue has been prepared in my leisure moments, 
and without the advantage of consulting any large local Collec- 
tion,* it will be found to contain many imperfections ; and there 
is no doubt that the number of species will hereafter be largely 
added to, especially in the tribe Amphipoda; of the strictly 
marine species of this group inhabiting New Zealand, little or 
nothing is known. 
EDWARD J. MIERS. 

*The only Collection which I have had the advantage of consulting 
besides that of the British Museum, is a small collection of Decapoda, 
brought to England by Dr. Hector; it contained two undescribed species. 
