202 THE ZOOLOGIST 
NOTES on tHe HABITS oF some or tot AUSTRALIAN 
MALACOSTRACOUS CRUSTACEA. 
By Daviw G. STEAD. 
Or the habits of these animals hitherto very little has been 
known. In descriptions of any animals it always seems to me 
that an insight into their habits and mode of living is quite, or 
very nearly, as valuable as the scientific diagnosis; but this is the 
part that is almost invariably neglected. Indeed, many species 
have been named from old and faded specimens whose proper 
habitat was not known. Though this is not intended as a 
“descriptive” paper, I have thought it advisable to place the 
species in systematic order. Of course, the species enumerated 
form but a very small portion of those known, there being about 
550 recorded species of the Malacostraca in Australia. 
Order PoDOPHTHALMATA. 
Sub-order BRACHYURA. 
Tribe OxyRHYNCHA. 
1. Halimus tumidus (Dana).—This species lives at a depth of 
from one to three feet below low-tide mark, where it is to be found 
on or under stones that are covered with seaweed. It is hardly 
possible to distinguish it unless it is in motion, as the carapace 
and ambulatory limbs are covered with seaweed of the same 
kind as that which surrounds it. The seaweed is held on to 
the Crab by means of the hooked hairs which cover it. Rather 
common in Port Jackson. f 
Tribe CYCGLOMETOPA. 
2. Ozius truncatus (M.-Edw.).—This is a species which, as 
will be at once observed by its conformation, is adapted to living 
amongst loose stones in rocky situations. ‘There are three well- 
marked varieties ; one, the commonest, being an uniform deep red, 
with black fingers; another a bluish-grey mottled variety; and 
the other white, which is only found of a small size. 
