Zoolow.-i NATURAL HISTORY OF VICTORIA. IPoIyzoa. 



On shells, stones, and algte, QueensclifF, Williamstown, and 

 Western Port. 



Explanation of Figures. 



Plate 37. — Fig. 2, natural size. Fig. 26, magnified. Fig. 2a, small portion, more highly 

 magnified. 



Plate 37, Fig. 3. 

 LEPRALIA CHEILODON (P. McG.). 



Description. — Cells small, oval or elongated, separated by narrow raised lines ; 

 surface granular, frequently with a row of small areolations round the margins ; 

 mouth rounded, lip thickened and with a broaii denticle inferiorly. Ovicell globular, 

 granular. 



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



Old specimens become a good deal altered in appearance: tlie 

 walls are thicker, the tubercles become perforated, and the marginal 

 areolations disappear. 



Williamstown, on shells. 



Explanation of Figdres. 



Plate S7. — Fig. 3, natural size. Fig. 3b, magnified. Fig. 3a, small portion, more highly 

 magnified. 



Plate 37, Fig. 4, 

 LEPRALIA CANALICULATA (P. McG.). 



Description. — Cells irregular, confused, immersed ; mouth large, straight 

 below, arched above, lower lip slightly thickened ; 5 or 6 stitf spines on the upper 

 border ; a series of gTooves extending inwards from the margin towards the clear 

 Buboral portion, in the centre of which is a round pore ; a single avicularium on one 

 side of the cell. 



Reference.— P. H. MacGillivray, Trans. Phil. Inst. Vict., 1859. 



QueensclifF, on a mussel shell. 



Explanation op Figdres. 



Plate 37. — Fig. 4, natural size. Fig. 46, magnified. Fig. 4a, a single cell, more liighly 

 magnified. 



[29] 



