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according to Buchholz, pale carneous. Length of adult female reaching to 8 mm.
Parasitic on Balanus balanoides Lin.
Remarks. As above stated, this form was first recorded by Sp.
a species of the genus Liriope of Rathke. About the identity
Bate as
of Buchholz's
Hem'tonlscus balani with Sp. Bate's species, there cannot, in my opinion, be any
doubt. It is the only species of the genus found in northern latitudes.
Occurrence. I have not myself found this form; but its occurrence in
Norway is stated by Dr. Buchholz, who found it at Christiansand on the common
littoral barnacle (Balanus balanoides). In all probability it is distributed
along the greater part of the Norwegian coast, as is the barnacle on which it
lives as a parasite. The figures here given are from a specimen kindly sent me
by
Dr. Buchholz.
Distribution. British Isles (Sp. Bate).
Gen. 3. ASCOIliSCUS, CI. O. Sars, n.
Generic Characters. Body of adult female constituting a simple pouch,
without any traces of segmentation or projecting lobes, affixed to the host only
by the aid of the shed larval skin still adhering to the pouch. Male (and last
larval stage of female) resembling in outward appearance that of the 2 preceding
genera, but differing in the fact that the basal expansion
of the antennulas and
the coxal plates are not pectinate, as also in the fuller development of the outer
ramus of the uropoda. Parasitic in the incubatory pouch of deep-water Mysidse.
Remarks. This new genus is founded upon an Epicarid, the retrograde
development of which has attained its maximum, the adult female being reduced
to a quite simple soft pouch containing the generative organs. The male, how-
ever, exhibits on the whole the usual structure, though differing in some particu-
lars rather pronouncedly from that of the 2 preceding genera. In any case
there cannot be any doubt that the present genus ought to be placed within the
fami ly Ci *yp toniscidce.