REPORT ON THE POLYZOA. 
17 
and raised into an expanded cup. Two (sometimes only one) very strong and long, jointed 
spines on the outer side, and a slender unjointed one on the inner side, above. Avicularium 
(sometimes absent) rather large, mandible triangular, pointed, not curved. Ooecium lofty, 
surface smooth, lower border simple entire. 
Habitat. — Station 325, lat. 36° 44' S., long. 46° 16' W., 2650 fathoms, bine mud. 
Station 323, lat. 35° 39' S., long. 50° 47' W., 1900 fathoms, blue mud. 
Peculiar in the very lax growth and straggling branches, all composed principally of 
interlaced radical tubes, supporting single or sets of zooecia at irregular distances apart. 
The cup-like expansion also around the aperture is very characteristic, and the two 
occasionally very large jointed spines on the outer side much resemble the antennae 
of an insect. One of these apparently arises, not from the margin of the aperture, but 
behind it. Occasionally a radical tube may be seen supporting, instead of an ordinary 
zocecium, a small curiously formed avicularium. 
(2) Cellularia cuspidata, Busk. 
Cellularia cuspidata , Bk., Brit. Mus. Cat., vol. i. p. 19, pi. xxvii. figs. 1, 2. 
,, monotrypa, Bk., Voy. of Battles., vol. i. p. 368. 
Habitat . — Station 161, off entrance to Port Philip, 33 fathoms, sand. 
[Australia ; New Zealand, Darwin, Hooker, Lyall, &c.] 
Mr. Hincks (Brit. Mar. Polyz., p. 36) remarks that the presence of the cuspidate point 
on the median cell at each bifurcation is not a distinctive mark of the Australian Cellularia 
cuspidata, but belongs to Cellularia peachii as well. If this be the case, it might perhaps 
be proper to recur to my original name of Cellularia monotrypa to distinguish the former. 
But the presence of a cusp cannot by any means be constant, at any rate in the British 
form, as it is totally wanting in the only specimen I have seen, and from which my 
original description of Cellularia peachii { Ann. and Mag. Nat. Hist., ser. 2, vol. vii. p. 82, 
pi. viii. figs. 1, 2, 3, 4) wms drawn up. 
(3) Cellularia cirrata, n. sp. (PI. II. fig. 4). 
Character. — Zoarium about 3 inches high. Branches much curled and interlaced, 
forming a dense tuft. Zooecia entirely open and sessile, with a broad base. Orifice 
broad-oval, contracted at the summit, margin rather thick, smooth. A blunt, curved, 
acuminate point at the summit of each zocecium, and a large avicularium behind the upper 
and outer angle. Ooecium formed of an entire metamorphosed zooecium, with a wide 
opening closed by a broad valve having a semilunar chitinous border. 
Habitat. — Station 195, lat. 4° 21' S., long. 129° 7' E., 1425 fathoms, blue mud. 
(ZOOL. CHAIjL. EXP. — PART XXX. — 1884.) Gg 3 
