PHRONIMA, 21 
AMPHIPODA. PHRONIMIDES, 
HYPERINA, 
Genus—PHRONIMA. 
Phronima. ULarreriix, Hist. Nat. Crust. et Ins. vi. p. 289. Spence Bare, 
Cat. Amph. Brit. Mus. p. 316. 
Phronyma. Leacu, in Sam. Ent. Comp. p. 101. 
Phronoma. Srunce Bate, Ann. Nat. Hist. 2 ser. xix. p. 150. 
Generic character. Cephalon large, broadest at the top, and 
gradually decreasing to the oral aperture. Eyes upon the 
dorsal surface of the cephalon. Superior antenne imperfectly 
developed. Inferior antennz obsolete. Mandibles without an 
appendage. Pereion broad and flat. Gnathopoda small; carpi 
having the infero-anterior angles produced. Pereiopoda, con- 
sisting of but six joints, third pair chelate. Pleon narrow. 
Three posterior pairs of pleopoda biramose, lanceolate. 'Telson 
small, single. 
Tue head in this genus is much broader at the top 
than at the mouth. The body is tolerably broad, and 
the tail is very narrow. The eyes are large, and placed 
upon the top of the head. The superior antenne are 
but imperfectly developed, consisting only of two joints, 
one probably representing the peduncle, the other the 
flagellum, the latter armed along two-thirds of its distal 
length with about sixteen long flattened filaments. The 
inferior antennze appear to be altogether wanting. The 
mandibles are without an appendage. The first two pairs 
of legs are small, and have the wrists inferiorly produced, 
and each terminates in a minute finger, flanked at the 
base on each side by a small wing-like process, which Mr. 
Spence Bate, in the Catalogue of the British Museum, 
has named dactyloptera. The remaining legs only possess 
