principally marine, found on the South Coast of Devonshire. 3 
I have only been able to procure one specimen of this crab, 
which isa male, and was taken in the trawl at a considerable 
distance from the shore. It has much the habit of C: tetraodon, 
but is not so broad in proportion, is more gibbous, destitute of 
the lateral spines; and the lengthened one over the eyes, so con- 
spicuous in that species, is in this very short. | 
CANCER GAMMARUS SPINOSUS. 
Tag-IE Fig. 1- 
Body rather ovate, not much compressed : the colour when 
alive is of a deep red-brown, and highly glossy : antennz four, 
setaceous, superior pair longest, and about balf the length of 
the body : joints of the body, including that to which the caudal 
bristles are fixed, eleven: arms (if so they can be termed, being 
shorter and smaller than the legs,) two pairs; these do not 
appear to be subcheliferous, but formed like the legs; and 
being destitute of the usua i anterior legs, independent of those 
which are placed forward in the situation of arms, it might with 
propriety be- described to be destitute of arms: posterior legs 
three pairs, which as well as the others are spinous: body 
smoeth: the four posterior plates are subcarinated, and terminate 
behind in a spine . the sides of the same plates also shoot into a 
s ine at the lower exterior angle : natatorial fins beneath the ab- 
domen two pairs; and three pairs of subulate caudal fins, the 
posterior pair of which are bifid. | 
. Length three quarters of an inch. | 
lam not enabled to fix any synonyms to this species, which is 
one of those that connect the Cancer and Oniseus. It appears 
to inhabit the open sca, and is frequently dragged on shore 
amongst marine ee! and in the nets, re at 
Torcross. 
B2 : Doctor 
