Australian Polyzoa. 127 



connected inferiorly with two narrow lateral ones, and 

 sending off superiorly, on eacli side, a narrow band to join 

 the lateral in the avicularian processess. The ovicell of 

 G. rufa is very large, cribriform and surmounted by two 

 avicularia. I am unacquainted with that of G cribravia. 



C. intermedia. 



Cells large, wide ; mouth vertical, or nearly so ; front of 

 cell with five large fenestrae ; lateral processes very wide, 

 usually abortive on one side ; back of cell smooth. 



Queenscliff. 



From G. plagiostoma, to which it is closely allied, it may 

 be distinguished by the following characters : The mouth 

 is straight or nearly so ; the anterior foramina, although 

 arranged in the same manner, are of smaller size ; there are 

 none of the peculiar enormous spoon-shaped avicularia of 

 C. 'plagiostoma ; the back also is smooth. The large size of 

 the foramina, and the very wide lateral processes sufficiently 

 distinguish it from G. ventricosa, Busk, the only other species 

 with which it can be confounded. The large lateral process, 

 with its tolerably large avicularium, usually exists only on 

 one side of the cell, 



G. Hannafordi. 



Cells wide, ovoid or sub-globular. Lateral processes large, 

 gaping, directed forwards, usually equal on both sides. Vittse 

 narrow, entirely lateral, extending the whole length of the 

 cell. Anterior surface smooth or very finely papillose ; pos- 

 terior surface faintly sulcate. 



Lady Bay, Portland, adhering to Algae — Mr. S. Hannaford. 



This species may be distinguished from all the others by 

 the large gaping avicularian processes, directed a good deal 

 forwards, and almost surrounding the mouth, and the narrow, 

 entirely lateral vittse. Its closest ally is G. ringens, which 

 has not hitherto been found in Victoria, and of which I 

 have not seen specimens. 



Family GELLULARIIDJS. 



Genus EMMA, Gray. 



E. cervicornis. 



Cells two in -an internode ; internodes connected by short 



double tubes ; aperture armed with five or six spines, of 



which the two outer are long and pod-like ; opercular spine 



ranched, projecting upwards and outwards from the inner 



