REPORT OX THE POLYZOA. 
11 
loculus large, pyramidal, compressed, with five or six perforations before and behind. 
Dorsal surface finely sulcate. 
Habitat. — Station 162, off East Moncoeur Island, 38 fathoms, sand and shells. 
Station 161, off Port Philip, 33 fathoms, sand. Station 163a, off Twofold Bay, 150 
fathoms, green mud. 
[Bass Strait, 45 fathoms, Yoy. of Rattles.; New Zealand, Dieffenb.; Queenscliff, 
&c., Victoria, Macgillivray.] 
(3) Catenicella plagiostoma, Busk. 
Catenicella plagiostoma, Brit. Mus. Cat., vol. i. p. 8, pi. v. figs. 1, 2; Voy. of Battles., vol. i. 
p. 358, Macgilliv., loc. cit., p. 17, pi. xxiv. fig. 2. 
Cellaria catenulata (pars), Lamk. 
Character. — Z o ce c i a large, wide, ovoid. Front divided into five large subtriangular 
fenestrse by four broad bands. Orifice arcuate, with a straight entire lower lip, and placed 
oblicjuely. Lateral processes very large (sometimes only on one side), rising into an acute 
spinous point and deeply cupped above. Avicularian loculus variable in size, sometimes 
more than half the length of the cell. Dorsum with a broad central baud and two narrower 
bands branching from it on each side. Surface between the bands beset with setose spines. 
Habitat. — Station 163a, off Twofold Bay, 150 fathoms, green mud. Station 163b, 
Port Jackson, 35 fathoms, hard ground. 
[Bass Strait, 45 fathoms; Swan Island, Banks Strait, Voy. of Rattles.; Victoria, 
“ very common ” Macgillivray.] 
(4) Catenicella cribraria, Busk (PI. I. fig. 6). 
Catenicella cribraria , Brit. Mus. Cat., vol. i. p. 9, pi. v. figs. 3, 4; Voy. of Rattles., vol. i. 
p. 359, Macgilliv., loc. cit., p. 20, pi. xxiv. fig. 6. 
Character. — Zooecia subglobose, compressed. Fenestrse numerous, punctiform, equi- 
distant, the circumferential larger than the rest. A minute central crescentic pore. 
Orifice semicircular, lower lip straight, entire (when perfect) ; lateral processes with the 
upper loculus suppressed, and the lowest prolonged downwards, forming an elevated wing 
on each side. Dorsal surface smooth. 
Habitat. — Station 161, off Port Philip, 33 fathoms, sand. 
[Bass Strait, Hooker ; Cook’s Strait, New Zealand, Lyall ; Queenscliff, &c., Victoria 
Macgillivray.] 
I have added a figure of this form, as that in the Brit. Mus. Cat. scarcely gives a fair 
representation of it. 
