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359*
7. PROTULA (PSYGMOBRANCHUS) PROTENSA PHIL.
T. tereti, lævi, protensa, elongata, finem versus patnim
atte-nuata; diam. 2]"’.
Aninial fiavescens; branchiarum filis utrinqae ultra 40, albis,
rubro annulatis; membrana laterali lutea, maculis septem rubris.
(Philippi).
Serpula protensa Lam. V. 1818. p. 364. n. 5. ed. 2. p. 2.
>. )> Cheiiu IH. Conch. pi. 1. f. 9. et t, X. f. 14.
Serpula /ascicularis Blv. Diet. t. 48. p. 558.
Psygmobranchus protensus »Gm.« Phil. 1. c. 1844. p. 196.
Protula protensa Grube 1. c. p. 90-
Hab. in mare mediterraneo, Phil.; Golfo di Tarento, Blv.
Gmelin’s Serpula protensa er ikke begrundet paa Rumph’s
tab. 41 f. 2, som Philippi angiver, men paa Martini’s fig. 12
A., hos hvilken sidste Forfatter Gmelin har laant sin
Beskrivelse. Afbildningen fremstiller Roret af en Teredo eller
en ung Kuphus, og ingen Serpula. Lamarck anfører ikke
Gmelin, endskjøndt Findestedet er taget fra denne Forfatter
eller fra Martini. Ifølge Blainville ere de Rørstykker, der
findes i Lamarck’s Samling, og som rimeligviis ere de samme,
der ere afbildede hos Chenu, fra Tarent. Grube anseer
denne Art, maaskee med Rette, for en Form af den følgende.
8. PROTULA (PSYGMOBRANCHUS) TUBULARIA MTG.
Shell taper, subulate ancl fleæuose, with the larger end detached
and ascending. Diam. -j2ö inch, length 4-5 inch.
•
Animal is an Amphitrite, with between 50-60 annulations; the
head long, white, barred with pink and green; on each side a loose
scalloped, transparent membrane, capable of contraction ancl
expan-Mon, and frequently surrounding the under part : tentacula two,
beautifully feathered, each originating from a single stalk, placed
near to each other, on the fore part of the head; on one side of
each of these stalks are long tibres, placed in regular order; these
again are furnished on each side with finer fibres. When the
aninial withdrew its tentacula it became soniewhat convoluted, as
the fibres closed, and turned a little spiral up the stalk: their
colour pale yellow, or yellowish white, the fibres, or pinnæ, annulated
with pink, so as to fonn regular, seniicircular lines, when the plumes
where spread. (Montagu).
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