Microscopical Society oj Victoria . 61 
been observed. The cells are isolated, the corneous connecting 
tubes having perished ; but their most delicate features are often 
perfectly preserved. Geminate bifurcating cells are of frequent 
occurrence. None of the species yet obtained are identical with 
existing forms, though several have a great resemblance to 
them. Some, however, are quite distinct and not a little 
remarkable. 
I hope, at no distant date, to lay before the society figures and 
complete descriptions of all the species of Catenicellce to be obtained 
from the Miocene rocks of the Geelong district. As far as at 
present appears the same groups are to be recognized, except that,, 
at present, no auritce have been met with. The fenestrate and 
vittatce are abundant, and simplices are represented. 
Sub-order, Cheilostomata. Family, Catenicellide. Genus, 
Catenicella. Group 1, Fenestrate. 
C. species i. — Cell broadly cuneate, aperature large, scutum small, 
fiat, occupied by six fenestne radiating from a suboral pore; 
lateral processes very wide in line with the lip, narrowing sharply 
below, giving a triangular appearance to the lower half of the 
cell. Avicularia minute, two slight lateral projections just above 
the widest part indicate their position. Superior processes, ace rose, 
from a narrow base, projecting nearly straight upwards, in the 
same plane as the face of the cell. Back of cell obtusely carinate, 
smooth ; size about that of 0. elegnns . 
C. species ii.—Cell ovate, aperture large, fenestne 9. No 
superior process, a shallow lateral excavation for the avicularia. 
Back rounded and smooth. 
C. species iii.—Cell cuneate, aperture large, scutum occupying 
nearly the whole front of the cell. Fenestra 9. Avicularia 
minute. A slight lateral projection in line with the aperture. 
Superior processes very large, thick, and broadly triangular, their 
bases nearly meeting above the aperture. 
C. species iv.— Cell broadly ovate, large, scutum large, slightly 
convex. Fenestra numerous, 10-12] Avicularia gaping, directed 
laterally. Upper processes wanting; lower processes extending 
to base of cell, which thus becomes very broad below. Back 
smooth. 
