354 ON THE CYCLOSTOMATOUS POLYZOA, 



depressed ; cancelli large, becoming smaller towards the 

 periphery." (Busk.) 



Port Jackson on Fucus ; Botany Bay. 



9. Discoporella ciliata, Busk. 



Discoporella ciliata, Bush, I. c, p. 31, pi. 30, fig. 6. 



" Discoid ; cells uniserial, 4 — 6 in each row ; diameter of mouth 

 less than that of interstitial cancelli ; peristome much produced 

 on one side, nearly vertical, divided into several (2 — 4) long acute 

 slender spines." 



Common in Port Jackson on Fucus. 



10. Discoporella porosa, sp. nov. 



Zoarium orbicular, a little depressed in the centre. Cells 

 disposed very regularly in biserial or triserial rows, becoming 

 longer towards the centre, where they are very much elevated, 

 closely adnate in their whole length ; peristome angular, usually 

 a little produced on their outer side. Central arese occupied by 

 cancelli which are smaller than those between the rows of cells — 

 the latter all nearly circular, a little wider than the mouths of 

 the cells. 



Found in Port Jackson. 



This species seems to be a close ally of D. calif ornica, D'Orb., 

 from which it appears to differ mainly in the smaller size of the 

 central cancelli. 



11. Discoporella complicata, sp. nov. 



Zoarium orbicular, slightly depressed in the centre. Cells not 

 disposed in regular rows, nearly totally immersed at the 

 periphery, a little elevated towards the centre ; mouth oblique, 

 nearly circular, peristome entire; wall of cell frequently 

 ornamented with a few acute spicules which are less than the 



