Zoology.'] NATURAL HISTORY OF VICTORIA. \Tolyzoa. 



Queenscliff ; Portland. 



The only Victorian species at all resembling this is E. obliqua, 

 the polyzoary of which is thicker. The situation and form of the 

 mouth also, as well as the shape of the cells, are different. The 

 avicularia are very rare ; they are small, short, broad, and situated 

 on each side below the mouth, directed downwards ; they seem to 

 be more frequently present on the cells supporting the ovicells. 

 The ovicells are similar to those of E. obliqua, and, like them, are 

 traversed by raised lines. 



Explanation op Figures. 



Plate 48. — Fig. 5, specimen, natural size. Fig. 5a, portion, magnified ; two avicularia 

 are shown on the cell supporting the ovicell (they should appear more distinct from the raised 

 margin, with a downward direction). 



Plate 48, Figs. 6 and 7. 

 ESCHARA MUCRONATA (P. MacGil,), 



Description. — Polyzoary stony, expanded, laminate or lobed ; cells ovate, with 

 a stellate pore or group of pores in the middle j mouth rounded above. An 

 avicularium below the mouth, the mandible directed vertically upwards, and the 

 beak usually projecting above the lower lip. 



Reference. — Lepralia mucronata, P. H. MacGillivray, Trans. Roy. Soc. 

 Vict., 1868. 



Queenscliff and Schnapper Point. 



What may be taken as the typical young cell of this species is 

 ovoid, smooth, or minutely granular. There is a vertical avicu- 

 larium immediately below the mouth, the mandible pointing directly 

 upwards, and the beak very calcareous and frequently projecting 

 as a mucro over the edge of the lower lip, with which it is incorpo- 

 rated. There is a small, round group of stellate pores on the middle 

 of the cell. The cells are indistinct, or separated by fine lines. In 

 some of the small cells there is a series of perforations along the 

 edge. In older specimens, and removed from the growing edge, 

 the cells become much altered, principally by the deposition of 



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