Microscopical Society of Victoria. 
63 
C. species xi. — Cell oblong, elliptical. Aperture rather small 
and round. Yittce very broad, extending to near aperture. 
Avicularia small, in a shallow excavation below the superior 
process. Upper process conical, thick, extending slightly 
outwards. Back rounded, smooth. 
Group 3. Simplices. 
C. species xii.—Cell sub-globular. No appearance of fenestra 
or vittae. Avicularia obscure. Upper and lower processes 
immensely largo in proportion to the cell. Back acutely carinate. 
This strongly resembles 0. carinata in structure, though very unlike 
in shape. 
A New Species of Polyzoa, By J. It Y. Goldstein. 
tmth Plate.] 
[Read 27th November, 1879.] 
Catenicella ponderosa. n. s. Plate Y. figs. 1, 2, 3. 
Cells ovoid, massive, irregular in outline; front and back 
strengthened by clasping bands of considerable thickness ; mouth 
arched above, sub-triangular below, with a strong denticle on each 
side, to which is hinged the operculum ; the mouth surrounded by 
a portion of a band in the form of a stout collar, widened 
superiorly; avicularia minute; fenestra? five, large and irregular 
in shape ; ovicell large, hooded, surmounted by, apparently, an 
abortive connecting tube; top of ovicell, under the hood, sparsley 
studded by strong papillae, with, on each side superiorly, a dense 
band of short papilla? ; mouth gaping, the fenestra? being 
lengthened so as to appear like a grating. 
This species is peculiar in the thick, heavy cells. It forms dense 
tufts, about four inches high, and the branches are frequently 
altogether composed of acutely triangular, geminate cells. It 
has affinities with C. playiostoma , and, like it, when fresh, presents 
a remarkable contrast of colours, the cell walls proper being of 
a bright orange red, while the bands are ivory white, but these 
colours soon disappear, and the dry specimens present the common 
horny appearance of other catenicellre. It is not uncommon; I 
have found it pretty generally along the coast from Portland to 
Queenscliff, and have dredged it alive in six fathoms. 
E 
