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200 fathoms. Some years afterwards, I met with this species in a widely distant
locality, viz., at Hasvig, West Finmark, where a few specimens, males and fe-
males, were taken from depths of from 150 to 200 fathoms.
Fam. 3. /Egidae.
Characters.--Bo Ay more or less broad, depressed, with the dorsal face
evenly vaulted and very smooth. Gephalon comparatively small, transverse, front
7iot produced above the bases of the antennae. Segments of mesosome well-defined
and closely crowded together, all, excepting the 1st, having distinct coxal plates
firmly connected with them laterally. Metasome composed of 6 well-defined seg-
ments, the last large, scutiform, and ciliated at the edges, constituting together
with the uropoda a well-developed caudal fan. Eyes, when present, large, extend-
ing more or less over the dorsal face of the head. Antennae pointing laterally, the
superior ones shorter than the inferior, and originating close together in front of
them; both pairs provided with distinctly-defined, multiarti dilate flagella. Oral
parts of rather anomalous structure, being modified for piercing and tearing the
skin of other animals. The first 3 pairs of legs short and thick, prehensile, ter-
minating in a strongly curved, hook-like dactyl us, the 4 posterior pairs more slen-
der, and ambulatory in character. Pleopoda with the rami large, foliaceous, cili-
ated at the edges, serving partly for swimming, partly for respiration. Uropoda
attached laterally beneath the base of the terminal segment, and having the rami
of coarser structure, and partly fringed with spines. Sexual difference not very
pronounced.
Remarks. This is one of the 6 families comprised within the large group
Cymothoidce, and is chiefly distinguished from the other families by
paratively broad, flattened body, and by
the com-
the structure of the antenna; and oral
parts. All the forms belonging to this family lead a pnrasitic existence, being
generally found clinging to the skin of fishes of different kinds, though they arc
pretty well adapted for moving freely about by the aid of the largely developed
pleopoda. Four or 5 genera are comprised within this family,
represented in the fauna of Norway.
8 Crustacea.
3 of which are