EEPOET ON THE POLYZOA. 
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(2.) Lepralia japonica, n. sp. (PI. XVII. fig. 5). 
Character.— 7i oarium thick, unattached, covered with a rather thick, yellowish-brown, 
opaque chitinous epitheca. Zooecia, in front, pyriform, broadly truncate below, slightly 
convex or tumid. Surface beneath the epitheca sparsely but uniformly punctured. Orifice 
somewhat immersed, arched ; lower lip nearly straight, entire. On the dorsal aspect 
the zooecia are quadrilateral and nearly square ; surface punctured. Interzooecial wall 
with numerous pores or plates. Ooecia inapparent. Zooecia about 0 //- 05 x '025. 
Orifice 0 //- 01. 
Habitat. — Cobie, Japan, 8 to 50 fathoms. 
(3) Lepralia tuberosa, n. sp. (PL XVII. fig. 7). 
Character . — Zoarium very thick and coarse-looking, attached by long radical tubes 
springing from the back of the zooecia. Zooecia viewed in front broadly oval or arched 
above and much contracted below the middle. Convex, separated by moderately deep 
sulci ; obscurely punctured round the border and at the base of the tuberosity. Orifice 
orbicular with three small points on the lower lip. Operculum rounded or 
arched above and contracted at the lower part, with a projecting point on either side 
(continuations of the marginal rim); with a crescentic, transverse, punctured and bordered 
area, and several faint longitudinal rugae, the membrane very finely punctured all over. 
Peristome very thick, supporting on each side towards the front a small circular, slightly 
elevated avicularium (with a short duck-bill shaped mandible) ; four strong articulated 
oral spines above. On the front of the zooecium, when mature, a very large conical 
hollow protuberance or tuberosity supporting one or several avicularia on the sides and 
near the summit (but not on it). These avicularia differ in size and direction, but all 
have a short, broad, rounded mandible. In the older zooecia, besides the enormously 
developed main tuberosity, several others appear, all supporting similar avicularia. On 
the dorsal aspect the zooecia appear more or less hexagonal, with an acute angle at the top 
and bottom. The surface is punctured, and presents a large subclithridiate aperture from 
which a long cylindrical chitinous radical tube issues. Orifice about 0 r/, 01 wide. 
Habitat . — Station 163b, off Port Jackson, 35 fathoms, hard ground. 
(4) Lepralia dorsiporosa, n. sp. (PI. XVIII. fig. 4). 
Character . — Zoarium thick, epitheca white. Zooecia elongated, hexagonal in front, 
and separated by thin raised septa ; a small triangular notch or fold in the centre 
above the orifice ; behind, the zooecia are broadly ovate. Anterior surface flat but 
