CRAB. 
4C)3 
A more beautiful animal than the preceding is 
the Cancer Homarus or embroidered Cancer, in 
which the colour, at least in the dried specimens, 
is a deeji greenish blue, with a similar yellow 
pattern, so disposed as to give the animal the ap- 
pearance artificially painted in stripes, &c. 1 
suspect that real specific differences exist between 
some animals of this division wdiich are confounded 
under the general name of Cancer Homarus. 
Cancer Astaciis or the Crawfish is a well-known 
inhabitant of our rivers, lodging in holes which it 
forms in the banks. 
Among the smaller kind of the long-bodied 
Cancri the Cancer Crangon or Shrimp is one of 
the most remarkable. It is found in vast abund- 
ance round many of the European coasts, and is, 
when living, of a beautiful greyish green colour 
sometimes inclining to blue, and sometimes tinged 
with brown. 
Some of this genus, as has been before observed, 
are destitute of a shelly covering to the bodjg and, 
in consequence, are obliged to obtain security 
from danger by inhabiting some close retirement: 
the most common species of this kind is the Cancer 
Bernardus of Linnaeus, commonly known by the 
name of the hermit-crab. It enters into any vacant 
univ^alve shell which is capable of conveniently 
receiving its body, and when in motion protrudes 
only the head and fore-parts, coiling the hind part 
of the body round the pillar of the shell. It is a 
very frequent inhabitant of common shells of the 
