REPORT ON THE POLYZOA. 
35 
Ocecium lofty, helmet-shaped, fixed at the upper border of the aperture, and with a 
slightly thickened and everted lip. 
Habitat. — Station 196, lat. 0° 48' S., long. 126° 58' E., 825 fathoms, hard ground. 
One great peculiarity of this species is the invariable origin of the avicularium from 
the middle of a cupped disc on the dorsum of the zocecium ; close to the base the tube is 
very much and suddenly constricted, but there is no true articulation ; from this part to 
the extremity the tube is of very equal diameter, not gradually enlarging as in Bicellaria 
spatulccta, and the terminal portion is not very much expanded. The rostral portion 
forms an oval'cup, with a thin membranous border, and the mandible is obtuse and fringed 
with a very thin membrane, representing more the lid of a trap than an organ for pre- 
hension, as it has no incurved acute denticle at the end, such as is usually present. The 
internal arrangement of the avicularium is however exactly like that in the avicularium 
of Bicellaria pectogemma, PI. VII. fig. 1. 
(6) Bicellaria glabra, Hincks (sp.) (PI. VI. fig. 1). 
Stirparia glabra, Hincks, Ann. and Mag. Nat. Hist., ser. v. vol. xi. p. 195, 1883. 
Character. — Zooecia disposed in a short, dense, sub-triangular spike, supported by 
a very long, slender, tubular, jointed, chitinous stem, which bifurcates irregularly. 
Zooecia infunclibuliform, shortly tubular below. Aperture sub-triangular. Avicularia 
small, pedunculate, sparsely distributed on the front of some of the zooecia, close below the 
aperture. The t'wo or three lowest zooecia in each capitulum have from five to seven 
reclinate spines on each side. The upper ones usually only a single ascending spine on 
each side. Ooecia (seen only on a few of the lower zooecia) globose, with an acute keel 
in front. 
Habitat. — Off Bahia, 10 to 12 fathoms. 
[Western Australia, Miss Gore.] 
Only a single, not very perfect, specimen of this very curious form occurs in the 
collection, having apparently been selected and placed aside, in a small separate tube, 
from the rest of the gathering procured in the same locality. 
The curious peduncle is very distinctly divided into numerous internodes of irregular 
lengths, and is probably of the same nature as that of Kinetoskias cyathus. 1 
(7) Bicellaria macilenta, n. sp. (PI. XXXII. fig. l). 
Character. — Zoarium about 1 to 2 inches high, of tufted growth ; branches 
short, feathered. Zooecia, body narrow, subtubular, very widely expanded at the 
1 Since the above was in type, Mr. Hincks has described, apparently, the same form under the name of Stirparia 
glabra, and gives a full account of the peculiar structure on the zoarium and its stem from better materials than those at 
my command. 
