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236 CLASS VII. 
tubercles supplied with uncimate sete at the dorsal pimna, with a 
fasciculus of subulate sete at the ventral pinna. The worm included 
in a gelatinous tube covered with sand. 
Sp. Sabella pavonina Sav.; Amphitrite penicillus Lam., Baster Natuurk. 
Uitsp. 1. p. 88, Tab. 1x. fig. 1; Tubularia penicillus, Zool. dan. Tab. 89, figs. 
I, 2, in the North Sea; Sabella magnifica Sav. ; Tubularia magnifica SHaw 
Linn. Transact. v. p. 228, Tab. 1x, ; Sabella (amphitrite) taurica RATHKE 
Fauna der Krym, Mém. des Sav. étrangers de VAcad. imp. de Saint-Petersb. 
Tom. 11. 1837, p. 426, Tab. vill. figs. 8—15, &e. 
Serpula L. Mouth situated between the branchiz, not tentacu- 
late, transverse. Branchie two, large, pectinate, flabellate, with 
bearded lacinize and a cylindrical filament at the base of different 
length in each branchia, the longer sustaining an orbicular dise or 
infundibuliform operculum. Feet as in the preceding genus. 
Caleareous tube procumbent, twisted or convoluted into a spire, 
including the animal. 
Sp. Serpula contortuplicaia L., GuéRIN Iconogr., Annél. Pl. 1, fig. 1, (the 
animal) ; Eis Corallines, Tab. 38, fig. 2; Serpula vermicularis L., Zool. 
danic. Tab. 86, figs. 7—9, &e. 
Comp. on this genus, which is somewhat differently determined and into 
which Sabella protula Cuv. is also brought, A. PHiIppr in HRICHSON’S 
Archiv. 1844, 8. 186—198. 
Spirorbis Lam. 
Sp. Serpula spirorbis, Spirorbis nautiloides Lam., Zool. danic. Tab. 86, figs. 
1—6; GuERIN Jconogr., Annél. Pl. 1. fig. 6. 
B. Branchie dorsal numerous. 
Hermella Sav. (Amphitrite Cuy. in part), Sabellaria Lam. 
First segment of the body supplied on both sides with a triple series 
of very glistering tufts, the external very patent, the internal close. 
The rudiments of the feet, in addition to sete, supphed with a 
cirrus elongate, adhering above to the base, performing the office 
of branchie. Animals living gregariously, included in tubules 
made of sand and fragments of shells, conjoined to form a common 
honey-combed mass. 
Sp. Hermella alveolata, Sabella alveolata L., ELLs Corallines, Tab. XXXVI. ; on 
the English and French coasts. Formerly the bundles of threads beneath 
the first segment were supposed to be gills. Mrinz Epwarps was the first 
who indicated the true gills, on account of which this animal belongs to the 
