162 
HISTORY OR BRITISH CRUSTACEA. 
to make signs of their happiness, they could not have done 
it more intelligibly. Suppose then, what I have no doubt 
of, each individual of this number to be in a state of posi- 
tive enjoyment, what a sum, collectively, of gratification and 
pleasure have we here before our view !” 
Mr. Halliday has observed"* a small beetle, CiUennm 
laterale , feeding on this Sand-hopper. It seizes them by 
the soft parts of the under side, and in this way, though the 
beetle be very small, it is able singly to master game many 
times its own bulk. Sometimes three or four beetles may 
be found together attacking a Talitrus of the largest size. 
Gen. 59. ORCHESTIA, Leach. 
Eirst and second pair of feet subcheliform ; upper an- 
tennrn shorter than the two basal joints of the lower ones. 
Jaw-feet blunt at the tip. Eirst pair of legs much smaller 
than second pair, simple in neither sex. 
Orchestia littorea, Leach. Shore-jumper. (Plate X. 
fig. 1.+) — When alive, yellowish-brown; the body smooth, 
# Ent. Mag. iv. 252. 
f We are indebted to the kindness of Mr. Spence Bate for the original 
drawings of Plate X. 
