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the uropoda to the projecting lamellae of the pleopoda, 2 of which may have
been wrongly adduced to the last segment. The above mentioned opinion
entertained by Messr. Giard and Bonnier, that this form is only the ,.phryxoid
stage" of Plciiroerypta galathrw, Hesse, cannot be admitted, since the specimens
examined by me had all characters of being fully grown animals.
Occurrence. Two specimens of this form are in our Univ. Museum,
having been taken many years ago by my late father at Manger,
west coast of
Norway, from the branchial cavity of Oalathca ncxa. The host of the specimen
figured by Sp. Bate and Westwood is not stated, but they assert to have re-
ceived another much larger specimen taken from an old Galathea squamifera,
and the Rev. A. M. Norman announce it even from Eupagurus Thompsoni. As
to the latter statement, I am, however, disposed to believe,
this form with Pxi'iidione Hyndmanni might have taken place.
Distribution. British Isles, Shetland Isles (Sp. Bate).
2. Pleurocrypta marginata, G. 0. Sars, n. sp.
(PI. LXXXVII, fig. 1).
that a confusion of
Specific Characters. Body of female comparatively short, oval or
broadly pyriform in outline, and rather asymetrical in full grown specimens, the
one side being almost straight, the other boldly curved. Cephalon rather large
and broad, with the frontal margin evenly curved and pronouncedly lamellar,
lateral corners obtusely produced. Segments of mesosome well defined, with the
lateral parts somewhat elevated ; coxal plates very fully developed, subcontiguous,
forming a broad marginal area. Metasome comparatively small, not attaining
1
U of the length of the body, epimeral plates on one side more fully developed
than on the other, and subimbricate. Eyes distinct. Legs wholly
concealed be-
neath the largely developed coxal plates. Incubatory plates large, overlapping
each other in the middle. Pleopoda not very large and but little projecting
beyond the epimeral plates, lamella? quite smooth. Uropoda unusually elongated,
forming 2 slender, almost filiform appendages, about twice the length
of the
lamellse of the pleopoda. j\[ale very narrow, sublinear in form, metasome forming
an undivided narrowly conical piece, obtuse at the tip. Colour not yet stated.
Length of female 5 mm., of male 172 nim.
Remark*. This new species is easily distinguished from the proceeding
one in both sexes, the female being of a considerably shorter and stouter form,
whereas the male is quite contrary much more slender than that of P. l