REPORT ON THE POLYZOA. 
39 
(2) Bugula leontoclon, n. sp. (PI. X. fig. 3). 
Character. — Zoarium composed of stout, straight, long furcate branches, several 
inches high. Zooecia bi- or tri-serial, elongated ovate, constricted at the base, but not 
tubular. Aperture occupying the entire front. Two or three strong curved tooth-like 
processes project inwards from one or both sides of the aperture. Avicularia subsessile, 
subglobose, seated on the apertural membrane near the lower border. 
Habitat. — Station 3, lat. 25° 45' N., long. 20° 14' W., 1525 fathoms, hard ground. 
(3) Bugula sinuosa, n. sp. (PI. X. fig. 2). 
Character. — Zoarium several inches high ; branches strong, forked, spreading, straight, 
bi- or quadri- serial. Zocecia elongated fusiform (viewed behind), constricted quite at their 
origin but not tubular. Aperture occupying the whole of the front. A blunt spinous 
process at the upper angle of each of the zooecia in the intermediate series, and only on the 
outer angle in the lateral. Avicularia subsessile, subglobose, situated on the outer side 
quite at the bottom of the lateral zooecia only. 
Habitat. — Prince Edward Island, 80 to 150 fathoms. 
Though closely allied to Bugula mirabilis, the differences between the two appear to 
be quite suffi cient to justify their being regarded as specifically distinct. A single 
specimen only occurs in the collection. 
(4) Bugula mirabilis, n. sp. (PI. X. fig. 1). 
Character. — Zoarium several inches high, spreading, composed of thick, straight, bifur- 
cating branches. Zooecia bi -or tri-serial, elongated, narrow, of very uniform breadth, except 
quite at the bottom. The aperture occupies four-fifths of the length, and is pointed at the 
bottom; the upper border rounded and quite simple. Avicularia subsessile, pyriform, 
with a very short peduncle articulated to the front of the zooecium, immediately below 
the aperture, and slightly to one side. The fertile zooecia form an intermediate or 
median series, in which they alternate with those in the lateral series, which are thus in 
pairs on the same level. 
Habitat. — Station 89, lat. 22° 18' N., long. 22° 2' W., 2400 fathoms, Globigerina ooze. 
A very remarkable dimorphous form, as it may be termed. The growth commences 
with a stem, composed of a fasciculus of radical fibres, and the zoarium at the lower part is 
constituted of slender divaricate biserial branches, whilst in the upper portions of the 
growth the branches are much thicker and triserial. 
Whether all the zooecia in the middle series are fertile is not quite certain, but as it 
is only in some of these that the ooecia are developed, it may be supposed that all may 
