CRUSTACEA. 
By CuHar.eEs CuiutTon, M.A., D.Sce., F.1.S., 
Professor of Biology, Canterbury College, New Zealand. 
Plate iV TLr* 
THE collection of Crustacea is not a particularly large one, and 
the species collected belong mainly to the crabs, larger shrimps, 
ete., to which attention was naturally mainly directed. Very 
few of the smaller forms were obtained, the collection containing 
only a very few isopods and amphipods that were gathered 
incidentally along with the larger forms. The lst contains 43 
species divided among the groups of Crustacea as follows :— 
Decapoda 28, Stomatopoda 2, Amphipoda 4, Isopoda 5,Cirripedia 
2. Parasitic Copepoda 2. All the specimens have been referred 
to species already described, but one species has only very 
recently been described, and another is new to the New Zealand 
fauna, while a new name is proposed for one preoccupied. The 
collection is nevertheless an interesting one in several respects, 
more particularly because it contains several forms gathered 
originally by the ‘‘Challenger’’ or by earlier collectors and not 
since recognised; these include one or two forms that had long 
been put down on the list of New Zealand Crustacea but whose 
right to remain on the list had been much doubted. It will be 
noticed that quite a large number of species belong to the 
Paguridw, some of them being species that have not been 
collected since they were first described by Filhol or Henderson. 
From the accounts given below it will be seen that there are 
one or two interesting examples of commensalism connected with 
some of the species. Thus Paramithrax longipes seems to be 
almost invariably accompanied by specimens of Balanus 
decorus growing on its carapace, the cirripedes being in some 
cases so large and numerous that they exceed in size the body 
of the crab itself. (See plate lvi.). 
* For explanation of plate see p. 312. 
