90 
HISTORY OP BRITISH CRUSTACEA. 
first pair of false feet is very large, and have two wide folia- 
ceous plates, the following have only one plate, of which 
the size rapidly diminishes; in the female, all these ap- 
pendages are much more developed, and form a support for 
the eggs. 
Gen. 29. SCYLLARUS, Fair. 
Carapace longer than wide ; the orbits situated not very 
far from the front angles of this shield ; the sides of cara- 
pace are parallel. 
These Crustacea are said to prefer shallow water with a 
soft bottom, in which they dig holes deep enough to con- 
tain them, and where they spend the greater part of their 
time, only leaving this retreat when searching for their food. 
Dehaan tells us that the Scyllarus ciliatus , a purplish-red 
species with very small blue points, is a favourite food of 
the Japanese ('Pauna Japonica/ p. 153). 
Scyllarus arctus, Linn. sp. The Broad Bolster. (Plate 
VII. fig. 1.) — Beak-like prolongation of carapace very wide 
but not projecting, and ending in front in a straight mar- 
gin : carapace with scale-like tubercles, and armed on the 
median line with a series of spines ; outer antennae large 
and strongly toothed; abdomen sculptured above. Colour, 
