Fam. 2 , Plate 2.
TRITONIA HOMBERGII, Cu v ie b .
T. oblongo-ovata, subconvexa, fusca, purpurascens, vel carneo-albida j velo bilobato digitato-
fimbriato; dorso tuberculato; branchiis numerosis, frondoso-plumosis, ad latera dorsi utrinque
dispositis.
Limace de Mer palmifere, Diquem., Joum. de Phys. 1785, pi. 2. (sec. Cuv.)
. Doris frondosa, Mull., Zool. Dan. Prod., p. 229 ?
Gmel., Syst. Nat., p. 3107.
Tritonia Hombergii, Cuv., Mem. du Mus. v. 1,, p. 483, pi. 31, f. 1, 2.
Blainv., Man. de Malac., p. 487/pi. 46, f. 6.
Lam., Anim. s. Yert. 2d ed., v. 7, p. 454,
Bouch. Chant., Catal. des Moll, du Boul., p. 37.
/*- Flem., Brit. Anim., p. 284.
Forbes, Mai. Mon., p. 3, pi. 1, f. 5.
Johns., in Ann. Nat. Hist. v. 1., p. 114, pi. 3, f. 1,2.
Leach, Syn. Moll. Gr. Brit., p. 24, pi. 7, f. 2.
Dalyell, Pow. Creat., v. 2, p. 271, pi. 38, f. 1, 2.
atrofusca, Macg., Moll. Anim. Aberd., p. 346.
Sphcerostoma Jamesonii, Idem, p. 336.
Hab. In deep water, on all parts of our coast.
Body from three to six, and sometimes even eight inches long, oblong, rather depressed,
subquadrilateral, rounded on the hack, and tapering to a blunt point behind; varying in
colour from dark purple-brown, to light brown, flesh-colour, and yellowish white. The back
is covered with large, unequal, soft, warty tubercles, often much mamillated and sometimes
slightly branched towards the posterior extremity of the body. Veil strongly bilobed, and
margined with numerous small digitations, terminating on each side with a stout tentacular
process visible only from the under side. Tentacles cylindrical below, rising above into a
fasciculus of pectinated or branched filaments of equal size, with a stout, plain, truncated
process appearing a little above them behind. They are retractile within rather wide
sheaths, expanded and turned over at the top, with the margin irregularly scalloped or
undulated. Brancldee set along the sides of the back on a much undulated pallial expansion,
and forming a continuous row of beautifully laminated plumes of unequal size. The larger
ones, five or six in number, are placed at intervals, rise upwards, and turn over on the back :
they consist of a short cylindrical pedicle, from which bipinnate branches spread over in a
horizontal direction. The intermediate plumes are of the same character, but smaller, inclining
outwards, and becoming rudimentary towards the posterior extremity, where they meet in a
point very close to the tail. The sides of the body are a little elevated, concave, and smooth
or very faintly tuberculated. Foot rather broad, transparent yellowish white; grooved and
rounded in front, and produced into a blunt point behind.