42 
THE VOYAGE OF H.M.S. CHALLENGER. 
A very interesting form, as coming from such an extreme depth. Its structure, as in 
most of the abyssal forms, is very delicate and transparent, and it is rooted by an infinite 
number of radical fibres, each attached to a dead Globigerina shell or similar small particle. 
At first sight the avicularia appear to be sessile, but they are in reality articulated to 
the outer edge of the frontal aperture. 
§ 8 . 
(8) Buguia neritina, Linne (sp.). 1 
“Remarkable Coralline,” Ellis, Coral., p. 35. 
Sertularia neritina, Linn., Dell. Chiaje, Esper. 
Cellularia neritina, Pallas, Fleming, Johnst., &c. 
„ „ Bk., Ann. and Mag. Nat. Hist., ser. 2, vol. vii. pi. viii. figs. 5, 6, 7. 
Cellaria neritina, Solander, Lamk., Esper., t. xiii. fig. 123. 
Buguia neritina, Oken, Gray (pars), Bk., Brit. Mus. Cat. 
Acamarehis neritina, Lamx., Risso, Blainv. 
„ „ d’Orb., Ann. des Sci. Nat., 1851, p. 313. 
Character. — Zooecia rhomboidal, elongated, truncate above, with projecting angles. 
Noavicularia. 
Habitat. — Station 36, off Bermudas, 30 fathoms, coral. 
[Britain, Scarborough Bean, Falmouth, F. W. Smith ; New Zealand, Hooker 
Lyall, Darwin; Auckland Island, Hooker; Australia, Voy. of Battles.; Bio de Janeiro, 
Lyall; North America, Ellis; Bay of Honduras, Shadbolt ; Adriatic, Heller; Gulf of 
Spezzia, Tasmania, Miss Gatty.] 
(9) Buguia longissima, n. sp. (PI. XXXI. fig. 7). 
Character. — Zoarium of long, straggling, lax growth, very irregularly branched. 
Zooecia usually produced downwards into a long tubular portion, a constriction being 
placed at the junction of the dilated upper portion and the tubular, and a second constriction 
near the lower end. Aperture oblong, occupying the entire front of the dilated portion ; 
a conical process on the upper and outer angle. Ooecium globose, acuminate, surface 
engine-turned. 
Habitat. — Station 149d, Boyal Sound, Kerguelen, 28 fathoms. Station 151, off 
Heard Island, 75 fathoms, volcanic mud. 
Bemarkable amongst its congeners, of which it is probably most closely allied 
to Buguia ( Halophila ) johnstonice, Gray, by the long tubular prolongation of the zoceeium 
downwards. In fact the appearance of that portion with its constrictions above and 
below indicates that it is homologous in all probability with a segment of a radical tube ; 
as which, I should be inclined to regard it, in accordance with what has been remarked, 
more particularly with reference to Bicellaria macilenta (p. 35). 
1 Mr. Hincks does not include this species in his list of British Marine Polyzoa ; and its occurrence in the two 
localities cited has probably been accidental. 
