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9
Fam. Membraniporidae.
Gen. Membranipora.
Membranipora cornigera. Busk.
Membranipora flemingii f. cornigera, Smitt (24, III), p. 367,
tab. 24, tig. 1.
Membranipora cornigera, Hincks (8), p. 164, tab. 21, fig.
4; tab. 22, fig. 3.
Findested. St. 29U.
Hincks (8, p. I(i5) angiver kun tre findesteder for
denne art, nemlig Shetland, Outer Haaf, off the coast of
Norway. Heraf fremgaar, at arten er yderst sparsom i
sin forekomst. Ved de gaffeldelte pigger i mundingen er
den saa let kjendelig, at overseen og forveksling ikke godt
kan finde sted.
Fam. Membraniporidæ.
Gen. Membranipora.
Membranipora cornigera, Busk.
Membranipora flemingii f . cornigera, Smitt (24, III), p. 367
Pl. XXIV. fig. 1.
Membranipora cornigera, Hincks (8), p. 1(14; Pl. XXI,
tig. 4; Pl. XXII, fig. 3.
Occurrence. Station 290.
Hincks (8, p. 165) mentions only three places where
this species has been found, viz. Shetland Isles, Outer
Haaf. and off the coast of Norway. From this it appears
that the species is of extremely rare occurrence. It is so
easily recognisable by the forked spines at the mouth,
that it could not well be overlooked or mistaken.
Membranipora arctica, D’Orb.
Membranipora lineata f. sophiae, Smitt (24, III), p. 365,
tab. 20, fig. 24, 25.
Membranipora arctica, Lorenz (1(5), p. 85, tab. 1. fig. 1.
Findested. Norskøenie (Spitsbergen).
Arten dannede et sortagtig overdrag paa snegleskal.
Membranipora arctica. D’Orb.
Membranipora lineata, /’. sophiæ, Smitt (24, III), p. 365;
Pl XX, figs. 24, 25.
Membranipora arctica, Lorenz (16), p. 85; PI. I, fig. 1.
Occurrence. Norwegian islands (Spitsbergen).
This species formed a blackish coating upon snail-
shells.
Membranipora spitsbergensis, Smitt,
Semiflustrdla arctica, D’Orb. (manuscript).
Membranipora arctica. Smitt (24, III), p. 367, 413, tab.
20, fig. 33—36.
Membranipora spitsbergensis, Bidenkap (1), p. 619.
Findested. Norskøerne.
Denne form, soai let kjendes ved sin karakteristiske
bagside (Smitt, 1. c., fig. 34) er hidtil kun funden ved
Spitsbergen. Membranipora arctica har jeg taget paa
forskjellige steder i Finmarken, men den er ikke observeret
saa langt syd som ved Storbritaniens kyster.
Membranipora spitsbergensis, Smitt
Semiflustrella arctica, D’Orb. (manuscript).
Membranipora arctica, Smitt (24, III), pp. 367, 413; Pl.
XX, figs. 33-36.
Membranipora spitsbergensis, Bidenkap (1), p. 619.
Occurrence. Norwegian islands.
Tliis form, which is easily recognised by its
characteristic back (Smitt, 1. c., fig. 34), has hitherto been found
only at Spitsbergen. 1 have found Membranipora arctica
in several places in Finmark, but it has not been observed
as far south as the shores of Great Britain.
Den norske Nordhavsexpedition. O. Nordgaard: Polyzoa.
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