REPORT ON THE POLYZOA. 
27 
(1) Nellia oculatci, Busk. 
Nellia oculcita, Bk., Brit. Mus. Cat., vol. i. p. 18, pi. lxiv. fig. 6, pi. lxv. fig. 4. 
,, „ Smitt, Elorid. Bryoz., vol. ii. p. 3, pL i. figs. 53, 54. 
,, „ Macgilliv., Nat. Hist. Viet., Dee. v. p. 51, pi. xlix. fig. 5. 
Character. — Zoarium 2 to 3 inches high, growth tufted ; internodes very uniform 
in length, usually with four or five zooecia on each face. Outline of front oblong, rounded 
at top, truncate below. Aperture oval, with a slight constriction above. Two raised 
papilliform avicularian prominences on each side below the aperture. 
Habitat. — Station 190, lat. 8° 56' S., long. 136° 5' E., 45 fathoms, green mud. 
Station 188, lat. 9° 59' S., long. 139° 42' E., 28 fathoms, green mud. Station 208, 
lat. 11° 37 / N., long. 123° 31' E., 18 fathoms, blue mud. Station 148, lat. 46° 47' S., 
long. 51° 37' E., 210 to 550 fathoms. OIF Bahia, 10 to 40 fathoms. Station 151, off 
Heard Island, 75 fathoms, volcanic mud. 
[Torres Strait, Yoy. of Battles. ; Coast of Arracan, Walker ; Trincomalee, Johnst. ; Gulf 
of Florida, Pourtales.] 
(2) Nellia simplex, Busk (PI. V. fig. 6). 
Nellia simplex, Bk., Brit. Mus. Cat., p. 19, pi. lxv. fig. 1. 
Habitat. — Station 87, lat. 25° 49' N., long. 20° 12' AY., 1675 fathoms, rock. 
7. Caberea, Lamouroux. 
Caberea, Lamx., Blainv., d’Orb. (sp.). Gray, Smitt, Busk, Hincks, &c. 
Cellaria (pars), Lamk., Audouin. 
Flustra and Cellularia (pars), Fleming, Johnst. 
Crisia (pars), Audouin. 
Selbia, Flabellaria, Gray. 
Canda (sp.), d’Orb. 
Character.— Zoarium very variable in dimensions ; branches more or less regularly 
dichotomous ; flabellate, csespitose or radiate. Zooecia bi-, tri-, or multiserial ; anterior 
face membraniporidan (i.e., showing a large area with an elevated margin, and a mem- 
branous aperture of greater or less size) ; furnished or not with a fornix, and usually 
having two oral spines on the outer side and two on the inner, one of which arises from 
or in common with the peduncle of the fornix. An extrangular avicularium to 
each of the outer zooecia, and an anterior one on the inner side or both sides of the median 
zooecia ; the mandible of these avicularia always rounded or obtuse. The back of the 
branches more or less completely covered with a succession of large interdigitating 
vibracularia, whose seta is always toothed, and when at rest is received in a groove on the 
back of the vibracularium. A radical tube enters the under side of each vibracularium, 
so that the back of the branches is usually completely covered by tubes. 
