130 Descriptions of New, 



Fornix, with a thick peduncle, the lamina usually expanded 

 chiefly downwards, reniform or hammer-shaped, two spines 

 at the outer angle above, and one, frequently of enormous 

 size, from the peduncle of the fornix. Lateral avicularia, 

 small : central avicularia large, irregularly placed above or 

 below the peduncle. Zocecia posteriorily elongated, smooth 

 or faintly sulcate. Vibracular setse, serrated. Ocecia 

 rounded, arcuate or irregular in outline, flattened in front, 

 with a thickened marginal rim. 



Port Phillip Heads. 



Differs from C. Damvinii in the smoothness of the lamina 

 filling in the area. It is closely allied to the European 

 G. Boryi, in which the cells are shorter and broader, and 

 which has a thickened smooth band round the edge of the 

 aperture. The ocecia are at first nearly smooth at the upper 

 edge, but gradually develop a thickened rim. 



Family Fakciminakiire. 

 Farciminaria simplex, n. sp. Plate I., fig 1. 



Zoarium dichotomously branched, internodes long. Zooecia 

 much elongated, narrow, separated by raised, slightly crenu- 

 latecl or smooth margins. Ocecia very large, globular. No 

 avicularia. 



Port Phillip Heads. 



This species differs from the others previously described 

 in the absence of avicularia and of spines or processes of any 

 sort on the separating margins of the zocecia. The ooecium 

 is of great size, occupies a distinctly bounded space between 

 the extremities of two cells. It is smooth, globular, but 

 when dried becomes wrinkled, and has a depression round 

 the upper edge and sides, showing the marginal walls, owing 

 to the shrivelling of its delicate outer envelope, which seems 

 to be separated by some distance from the inner part. 



Family Beaniim;. 

 Beania conferta, n. sp. Plate I., fig 5. 

 Zooecia large, each connected with six others by very 

 short tubes ; six large spines above, of which two from the 

 summit project directly upwards, a similar pair (one on each 

 side), originating a little farther back, pointing in the same 

 direction, and the third pair, arising opposite the lower edge 

 of the mouth, projecting upwards and forwards, and curved 

 inwards at their bases ; on each side of the aperture a double 



