Zoology.-) NATURAL HISTORY OF VICTORIA. [Polyzoa. 



Plate 38, Figs. 1 and 2. 

 LEPRALIA MONOCEROS (Busk). 



Description. — Cells ovate, indistinct, pierced in front by a variable number of 

 large apertures ; mouth arched above, straight below, the lower lip occasionally 

 mucronate. Avicularia scattered by the side of the mouth or between the cells. 

 A large thick articulated vibraculum or spine below the mouth on one side. Ovicell 

 small, roundish, or pyramidal, occasionally surmounted by one or two avicularia. 

 Eeference. — Busk, Brit. Mus. Cat., p. 72, t. xciii., 5, 6. 



Queenscliff ; Warruambool, Mr. H. Watts. 



Explanation of Figubes. 



Plate 38. — Fig. I, natural size. Fig. la, magnified. Fig. \b, portion, more highly mag- 

 nified. Fig. 2, another specimen, natural size. Fig. 2a, ovicell, magnified. 



Plate 38, Fig. 3. 



LEPRALIA EXCAVATA (P. McG.). 



Description. — Cells immersed, elongated, running in lines ; elongated areoliB 

 round the margins, leaving a narrow smooth surface in front ; mouth nearly vertical 

 to the plane of the poiyznnry, its upper border armed with 4 straight .«tiff spines, 

 the lower lip with a deep notch, inside the bottom of which is usually a small 

 simple denticle. 



Reference.— P. H. MacGilUvray, Trans. Phil. Inst. Vict., 1860. 



Queenscliff, on mussel shell. 



Explanation op Figduk.=. 



Plate .IS. — Fig. .3, natural size. Fig. ?>a, magnified. Fig. .34, small portion, more highly 

 magnified. 



Plate 38, Fio. 4. 

 LEPRALIA VITREA (P. McG.). 



Description. — Cells oval or irregularly diamond-shaped, separated by a raised 

 line ; surface granular ; two short, bhint, hollow processes below the mouth ; mouth 

 lofty, margin slightly thickened, under lip with a shallow sinus. Ovicell round, 

 granular. 



Williamstown. 



Explanation of Fioures. 

 Plate 38. — Fig. 4, natural size. Fig. 4o, magnified. Fig. 4i, more highly magnified. 



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