wo 
HYPERINA, 
This division is synonymous with Milne Edwards’s 
family of Hyprrines, and also with Dana’s family of 
Hyperipea. It contains four families, two only of 
which have representatives in our British Fauna, namely, 
Hyperiipé and PHRONIMID#. 
Fam. I1.—HYPERID/. 
The head is large and globular, being nearly occupied 
by the eyes. The superior antenne consist of a three- 
jointed peduncle and a flagellum, variable in length, but 
of which the first articulus is very long. The inferior 
antennz are formed of a peduncle and a variable flagel- 
lum. The first two pairs of legs are simple, but have 
the wrists more or less infero-anteriorly produced ; the 
other legs are generally subequal in size. The three 
anterior pairs of swimming legs resemble those of 
Gammarus, but the three posterior are broad, flat, and 
biramose ; the rami being lanceolate, and frequently 
serrated, but destitute of any ciliary fringe. 
The species are oceanic in their habits, and found to 
exist only in the gill cavities of the medusa. 
