Zoology.] NATURAL HISTORY OF VICTORIA. [Polyzoa. 



Plate 24, Fia. 7. 

 CATENICELLA ALATA (Wyv. Thomson). 



Description. — Cells pyriform. Fenestrse, 5-7. Lateral processes very large, 

 extending; as a broad flat fringe the whole length of the cell. Back of cell minutely 

 sulcate. 



Reference. — Wyville Thomson, Dublin Natural History Review, April 1858, 

 quoted in Microscopical Journal, 1859, p. 143. 



Queenscliff. 



Forms small tufts of a pinkish color, about an inch high, grow- 

 ing on polyzoa and algae. It is at once distinguished from the other 

 species by the enormous width of the lateral processes, each of 

 which is as large as the cell. The avicularian chamber is a long 

 narrow tube, expanding in the outer half and contracting at the 

 orifice. There is a constant pyriform or triangular opening in the 

 process immediately above the avicularian chamber, and generally 

 one or more irregular ones in the lower part of the fringe. 



Explanation of Figiibes. 



Plate 24. — Fig. 7, natural size. Fig. 7a, front view of cells, magnified. Fig. 76, back 

 view of cells, magnified. 



Plate 24, Fig. 8. 



CATENICELLA LORICA (Busk). 



Description. — Cells elongated, truncated at both ends. Fenestrse, 3, two 

 below the mouth, and one median much larger. Lateral processes of considerable 

 size. Back of cell minutely sulcate. 



Reference.— Busk, Voy. Ratt., i., 3585 Cat. Mar. Pol. Brit. Mus., 1. 1, f. 1-3. 



QueenscliflF and elsewhere ; not common. 



Forms tufts one or two inches high, of a dirty reddish-white 

 color. Beneath the third division of the lateral process, which is 



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