492 
THE OCEAN WORLD. 
When the ova first appears under the tail, they are small and very 
black, but before they are ready for deposition they are almost as large 
as ripe elderberries, 
and of a dark-brown 
colour. There does not 
seem to be any parti- 
cular season for this act, 
as females are found in 
berry at all seasons, but 
more commonly in 
winter. In this state 
they are found to be 
much exhausted, and by 
no means fit for the 
table. 
The generic name 
Astacus of Fabrieius i 3 
now confined to the 
crawfishes, which have a 
depressed rostrum, one 
tooth on each side, and 
the last ring of the 
thorax movable. The 
lobsters ( Eomarus ) have 
the eyes spherical, t ff0 
rings of the thorax 
being soldered together 
The Norway Lobsters 
Fig. 333. Kephrops Norvegicus. (NepflVOpS 
Fig. 338) have the eyes 
uniform, and the two last rings of the thorax movable. 
The last is one of the most beautiful of the larger Macrourans. 
general tint is pale flesh colour, with darker shades in parts, h s 
pubescence light-brown. This is generally considered a northern 
species, but Mr. Fell states that he has received specimens from tb e 
Mediterranean. It is found plentifully on the coast of Norway, 011 
the Scottish coast, and in the Bay of Dublin. It is considered the 
most delicate of all the Crustaceans. 
