Zoology.'} NATURAL HISTORY OF VICTORIA. [Polyzoa. 



Plate 38, Fig. 8. 

 LEPRALIA FEROX (P. McG.). 



Description. — Cells confused, coalescent ; front pierced with several larp-e 

 apertures ; mouth large, with one to three small denticles on one side ; lower lip 

 occupied by a large avicularium. 



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



This species forms small thick layers, encrusting algae. The 

 cells are quite undistinguishable. The mouth is very large, and 

 usually has on one side two or three small denticles. The lower 

 lip forms a large projecting mucro, hollowed on one side lor an 

 avicularium, and rounded on the other, from which also frequently 

 projects a mamilliform process. The avicularium faces that side of 

 the cell-mouth on which the sharp denticles are situated. In some 

 specimens there are two or three short rounded processes on the 

 upper lip. 



On algae, Williamstown and QueensclifF. 



Explanation of Fiouees. 



Plate 38. — Fig. 8, natural size. Fig. 8a, magnified. Fig. 8i, more highly magnified. 

 Fig. 8c, an avicularium on the lower lip (not quite accurate). 



Plate 38, Fig. 9. 

 LEPRALIA PELLUCID A (P. McG.). 



Descrii'tion. — Cells small, elongated, of various shapes, usually fusiform or 

 pyriform, distinct ; surface smooth or slightly wrinkled transversely ; mouth nearly 

 circular, with a shallow notch inferiorly. Ovicell mitriform, with a projecting 

 ridge, running vertically down the middle. 



A small transparent species, occurring rarely on algae and shells. 

 It veiy much resembles L. liyalina (also Victorian), from which 

 it may be distinguished by the difference in the ovicells. 



Williamstown and Queenscliff, on algae. 



Explanation of Figubes. 

 Plate 38. — Fig. 9, natural size. Fig. 9a, magnified. Fig. 9i, more highly magnified. 



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