ZOOPHYTOLOGY. 147 
in the newer cells towards the ends of the branches. Cell-mouth small 
and round. Vitte linear, sublateral, extending nearly the whole length of 
the cell. Front of cell slightly tubercular. Ovicell galeriform, superior ; 
anterior surface slightly concave, bordered above by a projecting crescentic 
beaded rim ; posterior surface convex, encroaching on the cavity of the next 
oa against which it is cemented, and which is sessile on the ovicelligerous 
cell. 
Probably allied in habit to C. tawrina (Busk), as its resem- 
blance to Thuiaria thuia is remarkable. Ccencecium very 
calcareous. 
Bass’s Strait; abundant; Dr. Harvey. 
16. C. perforata, Busk. 
Bass’s Strait; abundant; Dr. Harvey. 
The ovicell of this pretty species resembles that of C. tau- 
rina (Busk). It is galeate, tuberculate, sessile on the apex 
of one of the cells of a germinate pair. 
6.—Catenicelle simplices, Busk. 
17. C. carinata, Busk. 
New Zealand; Dr. Joliffe. 
&.—Cutenicelle auritea, Wyv. T. 
18. C. aurita, Busk. 
Bass’s Strait and Fremantle; Dr. Harvey. Port Fairy; 
J. Dawson, Esq. New Zealand; Dr. Joliffe. 
Fine specimens have the front richly tuberculated. Three 
or four tubercles below the mouth are perforate ; but there 
is no approach to the true fenestrate character. 
19. C. geminata, un. sp. 
Axial cell geminate. The secondary cell developed alternately on either 
side of the axis. Axial cells pyriform; a large gaping avicularium on the 
angle opposite the secondary cell. Secondary cell giving off by a terminal 
horny tube a single wedge-shaped peripheral cell. Cell-mouth large; a 
deep notch in the centre of the lower lip. In the primary and secondary 
axial cell four or five blunt spines surround the upper margin of the mouth, 
which is surmounted in the peripheral cells by two longer ear-like processes. 
Front of cell tuberculated. Ovicell unknown. 
A small species, apparently generally distributed in the 
Australian seas. Epiphytic on red Alge. 
Bass’s Strait and Fremantle; Dr. Harvey. Port Fairy ; 
Mr. Dawson. New Zealand; Mr. Joliffe. 
Had it not been for its close resemblance to C. aurita 
(Busk), evidently a true Catenicella, and with which it often 
grows associated, one might have almost been inclined to 
consider this curious little form the type of a new generic 
