BRANCHIPODID/E. 
261 
Montagu describes the upper pair of antennae, when the 
Nebalia moves, to be in constant motion, as well as the ab- 
dominal feet, while the lower pair are usually motionless 
and brought under the body. 
Gen. 137. NEBALIA, Leach. 
Nebalia bipes, O. Eabr. sp. — Body ovate, of a pale- 
yellow colour ; lower antennae as long as the body. 
Length three-eighths of an inch. 
Hab. Devonshire, west coast of Ireland, Shetland Islands. 
(Baird, 1. c. p. 38.) 
Otho Eabricius says that the female carries her eggs 
beneath the thorax during the whole winter ; these begin 
to hatch in April, and appear in May, when they are very 
lively, and adhere to the mother. The adult is not very 
active. On our coast they are found under stones, lying 
on mud amongst hollows of rocks. 
Fam. BRANGH1P 0 1) IDLE, Baird. 
The body without carapace; two pairs of antennae, the 
lower in the male prehensile ; the eyes two, on peduncles (in 
the young there is but one eye) ; eleven pairs of feet, all 
