Zoology.] NATURAL HISTORY OF VICTORIA. \Tolyzoa. 



Plate 26, Fig. 3. 

 MEMBRANIPOKA LINEATA (Linn. sp.). 



Description. — Cells oval ; margin with a series of spines, usually 5 on either. 

 side and one inferiorly, bending close over the aperture. Avicularia scattered, with 

 a large spoon-shaped mandible. Ovicell galeate, obscurely carinate, and frequently 

 with the lower half separated, anteriorly, by a slightly prominent semilunar ridge. - 



Reference. — Flustra lineata (Linn.) Systema, 1301 ; Busk, Cat. Mar. Pol. 

 Brit. Mus., p. 58, t. lxi., f. 1. 



Schnapper Point ; Port Fairy, Mr. Castwood ; rare. The spe- 

 cimen figured, which is on a calcareous nodule attached to the 

 root of a Laminaria, is a good deal worn, and most of the spines 

 have been rubbed off. In other specimens they are perfect, arch 

 forwards and almost entirely cover the aperture. 



Explanation of Figures. 



Plate 26. — Fig. 3, specimen, natural size. Fig. 3a, same, highly magnified, showing the 

 ovicells over the mouths in the middle of the figure, and the characteristic spines on the sides 

 and lower part of the aperture, looking, when broken, like tubercles, as shown on the right-hand 

 side of the figure. 



Plate 26, Fig. 4. 



MEMBRANIPORA ROSSELII (Audouin sp.). 



Description. — Cells oval, separated by raised finely beaded margins $ lower 

 part of cell filled in by a calcareous, granular expansion. 



Reference. — Busk, Cat. Mar. Pol. Brit. Mus., p. 59, t. c. f. 2. 



Encrusting earthy nodules attached to the roots of alga?. A 

 small elegant species. The calcareous expansion generally occupies 

 about two-thirds of the cell, and is minutely granular, the granula- 

 tions diminishing in number towards the upper part. 



I have considerable doubt in referring this to M. Rosselii, and 

 am not satisfied that it is not a form of M. Lacroixii. 



Explanation of Figures. 

 Plate 26. — Fig. 4, specimen, natural size. Fig. 4a, same, highly magnified. 



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