CETJSTACEA. 
61 
tie position of a straight line. I could detect no spine on the 
anterior part of the carapace, which was quite smooth, but 
marked with dots. The eyes are sessile and large, the claws, 
particularly towards the extremity, covered with minute hairs.” 
The figures of the young or zcea form are given in Mr. Bell’s 
Work from Mr. Couch’s drawings, who says that an ordinary 
sized Corwich bears at one time upwards of seventy-six thousand 
^ggs. 
PARTUENOPIB^. (Paethenopians.) 
Genus, Eueynomb. 
“Eyes retractile ; joint of the hand more or less triangular and 
armed. First joint of the outer antennso fused with the frontal 
plate, and giving insertion to the next articulation on the fore 
part of the level of inner canthus of the eye.” 
hlrrEYKoiiE ASPEEA. — Pougli Eurynome . — Wilne Edwards, Hist, 
des Crust., fig. \, p. 357 ; Leach, Malac.,p. 11 ; Pennant, p. 9, 
fig. 20 ; Bell, Hist. Brit. Stallc-eyed Crust, p. 46. 
There is a specimen in the museum of the Athenseum at 
Plymouth. 
“The length of the legs in this family of Crabs necessarily leads 
slowness of motion ; but they are well fitted to a residence 
among rocks and stones covered with seaweed, among which 
llrey stride with little difficulty. In the winter, they become 
almost, if not altogether torpid, concealing themselves at this 
Reason either in deep crevices of rocks or embedded in the soil ; 
the Corwich crab has been observed when caught at the time 
its first activity in April to have the inequalities of its 
®^rapaee covered with the mud of the bottom. It is perhaps 
^1 this period of repose that the crops of seaweed and corallines 
(Sertularia &c.) fix themselves, as they are often seen beautifully 
adorning them ; shells of different species, but especially oysters 
^nd mussels, are also found adhering, and on the smaller kinds, 
of the Genera Inachus and Pisa, and sponge wiU grow so 
luxuriantly as to conceal the whole carapace with tufts from the 
to the extremities. 
“In the spring the spider crabs appear in water of the depth of 
^ few fathoms ; but as the weather grows warmer they approach 
de shore and in summer climb the rocks, so as sometimes to be 
®ft by the receding tide. At the season of the greatest activity, 
llio corwich crab becomes so abundant that as no one thinks of 
G 
