Zoology.] NATURAL HISTORY OF VICTORIA. {Polyzoa. 



Plate 89, Fig. 5. 



CATENICELLA UTRICULUS (P. McG.). 



Description. — Cells contracted above and below. Mouth arched above, lower 

 lip with a wide shallow sinns. Front smooth, or very finely papillose. A very 

 narrow, entirely marginal vitta the whole length of the cell on each side. Lateral 

 processes triangular, extending forwards and outwards from each side of the mouth, 

 with a small avicularium on the outer edge, and frequently a small pyriform mark 

 (probably avicularian) at the base in front. Back of cell very finely sulcate. 



Warrnambool, Mr. H. Watts. 



I have only seen two minute fragments of this species, which 

 were sent in a slide to the Museum. The cells are ovate or 

 pyriform, contracted above and below. The avicularian processes 

 are triangular and ear-like, limited in extent to the depth of the 

 mouth, from the sides of which they directly rise ; the superior 

 margins above the mouth are closely contiguous, although not 

 quite continuous. On the edge of the lateral process is usually a 

 small avicularium, and at the junction of the lower angle with the 

 cell is frequently a triangular mark, which may possibly indicate 

 another avicularium. 



Explanation of Figures. 



Plate 89.— Fig. 5, natural size. Fig. 5a, front of cells, magnified; the very shallow sinus 

 is not shown iu the lower lip. Fig. 5b, back of cells, magnified. 



The specimens and descriptions of the above Catenicellce are 

 contributed by Mr. MacGillivray. 



Frederick McCoy. 



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