yet the tubes of the common. Thelepm cincinnaius are likewise more or less spiral in certain
circumstances.
The abundance of the Terebellids on the beach at St. Peter Port, Guernsey, is a
notable feature, and they are common in fissures of the gneiss rocks, especially from the
Battery to St. Sampson’s. . »•
The classification of the Terebellidse, including the condition of the nephridia, is not
free from uncertainty, since the presence or absence of branchiae, their form and number,
the number of segments furnished with conspicuous setigerous processes, the form of the
hooks and other features are subject to variation either from age or surroundings.' Yet
there are certain main features which, with the minute structure of bristles and hooks,
are of service in discrimination and arrangement.
Most authors subdivide this large family into sub-families, and fb this there is no
objection. The first snb-family is that of the Amphibritea, Malmgren, in which , the
cephalic lobe is short, provided with numerous grooved tentacles, eye-spots and branchiae.
The setigerous processesjicupy the lateral regions, especially anteriorly, whilst the books
occur throughout. •
Sub-Famiet I .—Amphitbitea,
• -Sem is CXLIV.—Amphiteite, O. F . Mülleir,|'!|Y71.
■ Cephalic lobe typical, with numerous sulcate tentacles ; narrow vertical margin behind
these produced on each side into a-lobe, and under the tentacles forming a membranous
Rip above the mouth. Buccal segment naked. Branchiæfruticose [pi- simple filam ents®
sparingly branched, equal, three pairs, fixed to segments j g | 3 and 4. Setigerous
lobe beginning at the fourth segment, under the third branehia,, and occurring in segments
16__24. Tori for the hooks commencing on the fifth segment, (second setigerous), and
borne behind the bristled region on short subrectangular pinnules. Capillary bristles from
the fourth backward with the tips striate and serrulate. Hooks short, avicular, biserial in
the bristled segments with the exception of the first , six, in the nest uniserial, and having
three tp four teeth. Ventral scutes conspicuous. This genus belongs to the first large
group of the Terebellids, in which the anterior and posterior hooks do not materially differ,
the cephalic region is short and eves often behind the tentacles. Anterior and posterior
nephridia present, the former smaller and with narrow, the latter with wider tubes (Hessle) ,
Malmgren (1865) first drew attention to the confusion connected with the geneno
name from O. F. Muller to Cuvier, Oken and Lamarck, but as Claparède subsequently
approved he conserved the old title for th e . species of O. F. Müller, viz., A m p ln tn te
cirrata.
1. Amphitbite oibbata, 0. F : Müller, 1771. Plate CXXV, figs. 5—5 a—bristle and hook.
Specific Charactei'8.—Cephalic fold behind the tentacles not produced into lateral
lobes. Eyes absent. Three pairs of branchiae each arising by a, single short base, and
consisting of simple filaments tapering a little distally and slightly spiral. Body from
87 to 200 mm. in length, and having about eighty-five segments. Seventeen pairs of
bristle-bundles. A small papilla under the setigerous labe from the third to the ninth, the
largest is the first (in segment Side-lobes; on S o n d , third and fourth segments,
and a small flap of the ridge for the hooks immediately beneath in % anterior segments.
Ventral shields ten to twelve, subrectangular. 'B ristles with serrated margins to wings.
Hooks in a double row in segments .11 to 20. .//They have along and obtepie basal plate
and four teeth above the main fang (in lateral view^JCjolour of, th |b o d y pale carmine,
brownish posteriorly/, Nephridia from the third to the eleventh segments.
1766.
1771.
1775.
1776.
1777.
1780.
1789-
|g800.
1803.
1806.
1807.
1808.
1812.
1817.
1818.
1820.
1828.
1830.
'1838.
1843.
1843-
, 1844.
Ä 849.
1851.
1853.
1855.
1859.
1861.
1864.
1865.
Synonyms.
Nereis oirrosa, Linnaeus: Syst. Nat., edit, xu, ], P*lp§5' I , , , . , ,
W K K m cirrata, Die W S M Ampler,:*-, O. F. Mult*.: Von Würmern p. 188 Tab. H
Besenförmige, Martini. Allg. Gesch. Nat., vol. n, p. 478, Tab. figs. 1, 2.
- ’, F. Müller. P r o d . Z o o l. Dant f. 216, No. 2617.
Teredo areifaria, Forsk&l. loones Bex Nat., p. 8, Tab, xxvi, figs. 1 and V / /
Ver-medmse, Dicquemare. Journ. Pays., p. 215.
AwpUbrite,cirrata, O. Fabriciu* Fauna Greenland., p 285
-92. 1’crelella (AmpM«e) cirrata, Brugui&b? Enoyclop. M e t h o d .,0 |D l «g»- 16 aIld '
Die hwchigte amphitnte, O. F. Müller. NaturgeSch, Wurm-Arten, p. 188, Tab. xv.
Sabella cirrata, Montagu. Test. Brit., Fart.®, p„ 541.
. Terebella „ Turton’s Linnaeus, p. 83.
Sabella „ idem. Brit. Fauna, vol. .i, p. 550.
vlwip/iiro : ,,, Montagu. MS. Linn.p||p|pl. xxviii, fig. 1.
Sabella ■ PennanS Brit. Zool., voi. iv, p. 111.
Terebella „ Cuvier. Reg. An., i,P^519.
. ctmchileaa, . „ ebrrhata, Moidnetmag. u. Ib’iTdr.a, nps . 5L2in0n .. Hoc.,, vol. xii, p. 3,4 J2,l lTikab. xi, fig. 1.
„ ‘ cirrata, Savigny. Syst. Anbei., p, 86.
- cirrhata, De Blainwll« Diet. So. nat, t lvu, p 438
AmpHlrite cirrata, Boso. Vets,;, 2nd edit., v ö Ä p. Jf5.
Terebella „ RMailtnhek eE. dwFaarudns.a NAonrnw. eSgo,. (nNaotv.,a 2 A« soétra. ,N at igPu-r *.),* t . x•x, p. 220
53.,, „ C h^B Slust. Conoh., pl. vii.
.,, (Ersted. Région. Marin., p. 79, fig. 9.
■ j idem. Nat. Tidsk., 2^ r.,i, p. 4 l ÿ |l®,V^f W M ” „ Leuckart. Archiv f. Naturges, Bd. xv, p. 171, Tab. m, fig. 5.
> : ” , 1 „ SGarrus.b e.N yFta Mrna. gA.,n Bndel.. ,v pi,p p. .8 200 a6n, d 138.
■ ■ orna,t a, LSeaidrys.. . NHytH Ma Bg.h, oBdde. Ivsii, , apn.d 8 N90,. JerseyÂ14, p t,» figs. 44 and 45
f ; / ÿ,;;,. (AmpM«e) cirrata, Danielssen. Kgl. Norske Vid.-Selsk. Skrift., 4* Bd., p. 122,
, ri cirrata, idem. Nyt Mag., xi, p* 55.
Amphitrite $;■ Grube. Insel Lussin., p. 88. •
„ Johnston. Cat. Wörms. Brit. Mus., p. 237.
” „ Malmgren. Nord. Hafs.-Annul., p. 375, Tab. xxi, fig. 53.
Terebella „ De Quatrefages. Annel., t. ii, p. 361.
}j , Montagui, idem. Ibid., p. 361.
1 Marenzeller states that 4 and 5 are without tbese.