CRUSTACEA. 
77 
in the emi^ty shells of various species of the tarhinated mollusca, 
nioviug about in this 'way from an early stage of their existence 
ns if the structure were a portion of their own bodies. 
They cannot, indeed, be easily induced to quit their habitation, 
i^nt shrink into it on the least appearance of danger, so that the 
nsual way in which they fall victims to an enemy is when the 
shell and its inhabitants are swallowed together. Pew crustaceans 
nre more frequently found in the stomachs of fishes, and as they 
,lnit the shell when about to die, they soon become the food of 
their devourer, the empty shell being speedily rejected from the 
Bio nth. These crustaceans also quit their assumed tabernacle 
tforn. increase of size, which as in others, is at the time of exu- 
I'iation ; and on one occasion, when I was observing the combat 
a pair in captivity, the smaller, which seemed to have felt 
itself fettered by its unwieldy covering, quitted the encumbrance, 
■ind manoenvered round the enemy with great alacrity in its 
Baked condition. They often seize the fishermen’s bait, and are 
tirawn up from deep water by the line ; and in feeding I have seen 
them hold their prey with the smaller (or left) hand, whilst the 
other was engaged in nipping off pieces and conveying them to the 
Biouth. They breed when of small size, the pea being thrown 
Bound on the back, from which position it is certain that they 
Binst quit the shell in order to deposit it.” 
This last statement is corrected by the fact that Crustacea 
Bever deposit their spawn, but the young are hatched from the 
®8g and are thrown out of the shell by the current of water that 
Passes out of the shell during the process of respiration. I have 
them ejected through the branchial passage under the wing 
Bf the carapace. 
Mr. W. A. Lloyd, who was formerly curator of the Hamburg 
B-TUarium, infoi-med me that in the spring of the year in the 
B'lUarium he had seen the male of this crab take hold of the 
®^ell in .^vhieh a female was contained, and carry her about for 
^6eks together, grasping the thin edge of the shell, and when 
female was fed the male did not take away the food as he 
^ould if a male one fed in his vicinity. 
In the Zoologist for July 1871, pp. 26-85, Mr. Gurney states that 
found in one of the capsules of a group of eggs of Buccinum, 
I^Bt had been discharged, a little whelk shell not larger 
Ban Ko. 5 shot, occupied by a young Hermit crab about an 
H 
