Zoology.-] NATURAL HISTORY OF VICTORIA. IPolyzoa. 



Plate 89, Fig. 1. 



CATENICELLA INTERMEDIA (P. McG.)- 



[Genus CATENICELLA (Blainv.). (Sub-kingd. Mollusca. Class Polyzoa. Order Infun- 

 dibulata. Sub-ord. C'heilostomata. Fam. CateuicellidfE.) 



Gen. Char. — " Cells arising one from the upper and back, part of another by a short corneous 

 tube, all facing the same way and forming dichotomously divided branches of an erect phytoid 

 polyzoary ; cell at each bifurcation geminate ; each cell with two lateral processes, usually 

 supporting an avicularium. Ovicells either subglobose and terminal, or galeriforni and placed 

 below the opening of a cell in front."] 



Description. — Cells large, broad, rounded. Mouth lofty, narrow, arched above, 

 lower lip slightly rounded upwards and forwards, and sometimes with a very 

 minute sinus in the centre. Front with 5 hirg-e fenestra. Lateral processes very 

 wide, forming- a wide cup above, and with a depression i'or a large avicularium on 

 the outside. Back of cell smooth. 



Reference. — P. H. MacGillivray, Trans. Roy. Soc. Vict. 1868. 



Port Phillip Heads. 



It may be distiiiguislied from C. plaf!;iosto7)ia by the nearly 

 vertical mouth, the smaller fenestra^, and the al)sence of the 

 peculiar enormous avicularia. The lateral process is usually 

 absent or abortive on one side. 



Explanation of Figures. 



Plate 89. — Fig. 1, fragment, natural size. Fig. la, front of cells, magnified. Fig. lb, back 

 of cells, magnified. 



Plate 89, Fig. 2. 

 CATENICELLA AMPHOPvA (Busk). 



Description. — Cells oval. Mouth arched above, nearlj^ straig-ht below. Front 

 with a narrow, vertical, elliptical opening- below the mouth, and a series of 9 pyriform 

 feriestrae radiating- to the circumference. Lateral {)rocesses of considerable size, 

 occupying the upper ang-les, and produced into short points directed upwards, of 

 neaily erpial size; on one or both, below the point, is a .smsill avicularian chamber. 

 B:ick of cell smooth, with a broad, elevated, vertical band, g'iving- off on each side a 

 narrower hand to the back of the avicularium. 



Reference. — Busk, Brit. Mus. Cat. Mar. Polyzoa, Pt. i. p. 8, pi. iv. f. 4, .5. 



Port Phillip Heads, Mr. J. B. Wilson. 



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