CYAMIDA. 
“I 
“l 
Fam. III.—CYAMIDA. 
Body flat. Cephalon cylindrical, tapering, anchylosed 
with the first seement of the pereion. The latter broad, 
depressed, with the segments laterally wide apart. Pleon 
rudimentary. Eyes posterior to the superior antennz, of 
which the flagellum is indistinctly articulated. Inferior 
antenne minute, inserted between the upper pair and 
the labrum. Gnathopoda subchelate. Pereiopeda 
flat, broad, and furnished with strongly-hooked dactyla, 
wanting to the third and fourth segments of the body, 
which are furnished with elongated branchie. 
This family consists of a single genus, the species of 
which are parasitic upon the cetaceous animals. They 
are of moderate size, and are able, by means of the strong 
hooks with which their legs are terminated, to affix them- 
selves firmly to their prey. The head is small, oblong, and 
cylindrical, soldered to the first segment of the body, 
which is dilated at its sides, giving this part of the animal 
a pear-shaped appearance. The antenne are affixed to 
the anterior and superior extremity of the head. The 
upper pair are of moderate size; the peduncle composed 
of three nearly equal-sized joints, followed by a small, 
indistinctly-articulated flagellum. The inferior pair are 
very small, and terminate in a small conical, apparently 
uni-articulate flagellum. Immediately beneath these lat- 
ter appendages is a small tubercle, which is homologous 
with the olfactory organ of the normal Amphipoda. The 
mouth is small, and placed at the infero-anterior extremity 
of the head: it consists, according to Savigny, of a 
