rs
of the Escharinae, but are not as in them placed above the mouth of the
cell, but below it in front: and in all cases the shape of the
ovicell-bearing cell is much altered from the rest, and in all the
vittate species the cell upon which the ovicell is produced arises from
its predecessor, not with the intervention of a short tube, but is
immediately sessile upon it, by a broad base.

a. Fenestratae.

Cells large, fenestrate in front; ovicells terminal.

1. C. hastata, n. sp. ?

C. bicuspis ? Gray. Dieffenbach's New Zealand, Volume 2 page 293.

Fenestrae, 7 to 9, disposed in a crescent, and with elongated fissures
radiating towards them from the median line. Avicularia supporting a
large pyramidal pointed hollow process, compressed, and perforated before
and behind by five or six small circular pores.

Habitat: Bass Strait, 45 fathoms, dead shells.

Of a yellowish white colour, sometimes reddish. Forms fine bushy tufts,
with long wavy branches, arising from a short common stem, and it attains
a height of five or six inches. It appears sometimes to be parasitic upon
other polyzoa, and is then much smaller. Its peculiar characteristics are
the perforated and striated scutiform area on the front of the cell and
the perforated, or apparently perforated pyramidal lateral processes
above each avicularium; these processes are much developed, and give the
cell the form of a broad inverted shear-head. It seems to be an abundant
species in Bass Strait, and it occurs also in New Zealand. (Dr. Hooker's
Collection.)

2. C. amphora, n. sp.

Cellaria catenulata ? var. B. Lamarck. Anim. sans Vert. Volume 2 page 180
2nd edition.

Cells oval, sides rendered straight upwards by the broad avicularia which
are prolonged upwards into an acute spinous angle, and support a shallow
cup. Front of cell with nine pyriform fenestrae, with fissures proceeding
from their pointed ends towards an oval central perforation. An elevated
band, extending from the sides of the mouth to the upper angular
processes of the avicularia. An elevated flattened band along the middle
of the back, which at the top sends off a narrower lateral band to each
avicularian spine.

Habitat: Bass Strait, 45 fathoms.

A fine species of a bright reddish brown, and in the younger cells very
transparent. Forms small, irregularly branched bushes, four to six inches
high and wide. It is peculiar by its extremely regular vase-like form of
cell, which is given by t