Art. VI. — On a Nevj Species of Bicellaria. 

 By J. Bracebridge Wilson, M.A., F.L.S. 



[Read April 11, 1889.J 



I have to report the occurrence of a new Bicellaria, 

 which I found growing on a sponge at Station 1 (off Point 

 Nepean). It is a very minute form, but very beautiful, and 

 is specially interesting from its ringed stem, resembling that 

 of Stirparia ; and suggesting, if not the identity of, at least 

 the close connection between, the two genera Bicellaria and 

 Stirparia. 



I have handed this new Polyzoon to Dr. P. H. MacGillivray 

 for description and figuring. 



Art. VII. — On some Neio Species of Marine Mollusca. 

 By J. Bracebridge Wilson, M.A., F.L.S. 



[Read April 11, 1889.] 



The following new species of Marine Mollusca, were 

 dredged in Port Phillip Bay b}' me in the early part of 1888. 

 The descriptions are by Professor Ralph Tate, F.L.S., F.G.S., 

 and appear in the "Transactions of the Royal Society of 

 South Australia " : — 



Kellia rostellata spec. nov. — 



Shell minute, rather thin, semi-translacent, broadly heart- 

 shaped, a little longer than high, inequilateral and moderately 

 convex. The dorsal margin is oblique on both sides, longer 

 behind than in front, and excavated in front of the beaks. 



