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straight line. Antennae about as in the 2 preceding species. Anterior pairs of'
legs rather strong, with the meral joint slightly sinuated inside, posterior pairs
not much elongated. Uropoda as in ^E. tridcns. Colour of a young specimen:
light yellow, with scattered reddish specks, posterior part
of mesosome dark
bluish with opaque white pigmentary ramifications in the middle of the segments.
Length of adult animal reaching to 48 mm.
Remarks. According to prof. Liitken, the form recorded by Strom in his
description of Sondmore, as "Fiskebj0rn", is undoubtedly referable to this species.
The same form was subsequently observed off the British Isles by Johnston, but
was only regarded as a variety of his ^E. monophthalma. H. Rathke referred
the species erroneously to JE. bicarinata Leach, which is a very different species
not yet found on the coasts of Norway. Under such circumstances, the name
+E. Stromii, proposed by Liitken, ought to be retained for the species. It is easily
distinguishable from the 2 preceding species by the very large eyes,
along the median line ;
which meet
and also by the shape of the terminal segment of the metasome.
Occurrence. The species would seem to occur not infrequently along the
whole south and west coasts of Norway, and extends northwards at least to the
Lofoten Islands. It is generally found on the skin of the common cod, but,
as is the case with several other species, it seems also to infest several other
kinds of fishes. I have myself taken it in the Trondhjem Fjord,
and from the common picked dog-fish (Acanthias).
from the haddock
Distribution. British Isles (Johnston), Skagerak (Schodte & Liitken),
Faroe Islands (Liitken).
4. jga erenulata, Liitken.
(PL XXV. fig. 3.)
JEga erenulata, Liitken. Vid. Medd. Nat, For. 1858, p. 70, PI. 1. A, figs. 4, 5.
Specific Characters. Very like the preceding species, but of larger size and
coarser structure, the dorsal face being finely scabrous, owing to numerous small, de-
pressed pits, and having the transverse lines of the 4 posterior pedigerous segments
very distinctly marked. Coxal plates rather large, and less acutely produced posteriorly.
Metasome rather broad, with the epimera of the anterior segments projecting
beyond the sides of the mesosome; terminal segment narrowly
truncated at the
tip, with the posterior edge nearly straight, and distinctly crenulated, upper face
plain, without a trace of carinaj. Eyes large, meeting above along
the median
line. Antennae about as in J5". Stromii. The 3 anterior pairs of legs, on the
other hand, distinguished by a very conspicuous cultriform spine, issuing from