Zoology.} NATURAL HISTORY OF VICTORIA. [Po/yjoa. 



C. gracilis it is very broad and semicircular. I have not seen the 

 ovarian pores in the present species. 



Explanation of FionRES. 



Plate 49. — Fig. 4, specimen, natural size. Fig. 4a, an internode, magnified. Fig. 44, 

 small portion, more highly magniiied, showing an avicularium. Fig. 4c, outline of 2 cells and 

 profile of aTicularium, to show the projection of the rostrum. 



Plate 49, Fig. 5. 

 NELLIA OCULATA (Busk). 



[Genus NELLIA (Bosk). (Sub-kingd. MoUusca. Class Polyzoa. Order Infundibulata. 

 Sub-Order Cheilostomata. Fam. Salioornariida»). 



Gen. CAar.— Cells distinct, convex in front, aperture large.] 



Description. — Cells qnadriserial, few in each series (nbout 4 or 5), projecting^ 

 above, of nearly uniform width ; aperture large, of same width throughout, rounded 

 above and below, and with a thickened margin ; 2 small, hollow, rounded processes 

 below the aperture, perforated at the summit by 1 or 2 minute openings, which are 

 occasionally occupied bj' avicularia. 



Eeference. — Busk, Cat. Mar. Pol. Brit. Mus., p. 18, pi. Ixiv., fig. 6 ; pi. Ixv. 

 (bis), fig. 4. 



Parasitic on algse and zoophytes, QueenscUff. 



Forms small glassy tufts. It is readily recognised by the shape 

 of the aperture, and the presence of the 2 rounded hollow 

 processes at the base of the cell. These processes are pierced by 

 1 or occasionally 2 small apertures on the simmiit. According 

 to Smitt (Floridan Bryozoa), these apertures are occupied by small 

 avicularia, and in a few instances I have been able to detect them. 

 The upper part of the cell, when seen in profile, forms a marked 

 projection below the submarginal processes of the cell above. 



Explanation of FionRES. 



Plate 49. — Fig. 5, specimen, natural size. Fig. 5a, internode, magnified. Fig. .54, the 

 same, more highly magnified. 



[51 ] 



