164 Proceedings of the Royal Society of Victoria. 



sessile avicularium, with a small subcircular mandibular area, 

 below the aperture. Dorsal surface shows the backs of only two 

 rows of zocecia (the marginal), which are so much broader than 

 the front that they meet in the centre, the central zocecia must 

 consequently be smaller than the marginal and heaped up ; a 

 vibraculum at the base of each (marginal) zoecium. 



Locality. — Mitchell River. (J. Dennant). A single specimen 

 only. 



Amastigia acuminata, n. sp. (PI. XVII., Fig. 6). 



Zocecia biserial, alternate ; outer angle produced into a long 

 conical spine ; aperture oval, almost covered with a pedunculate, 

 broadly spatulate scutum. The dorsal surface has a narrow 

 median ridge, the upper and lower boundaries of the zocecia are 

 defined by a linear depression ; an avicularium, with an acute 

 mandible pointing downwards on each zocecium. 



Locality. — Moorabool. (T. S. Hall). A single specimen. 



Caberea mopningtoniensis, n. sp. (PI. XVII., Fig. 7). 

 . Zocecia tri- or quadri-serial, elongate ; aperture occupying a 

 little more than half the surface, elongated, oval, slightly 

 constricted near the upper part ; margin granulated ; two 

 spines on each side above the constriction ; two sessile avicu- 

 laria below the aperture, and a small sessile avicularium on 

 the upper and outer angle of the marginal zocecia. Ocecia 

 mitriform, convex, smooth ; a sessile avicularium with long 

 triangular mandible on each side above. 



Z^<rfl///>'.— Mornington. (T. S. Hall). 



This differs from C. grandis in that it has two spines on each 

 side of the marginal and central zocecia, that species having only 

 one on each side of the central zocecia, and two on the internal, 

 and one on the external angle of the marginal zocecia ; the 

 avicularia are larger, especially those above the ocecia, and the 

 ocecia have no thickened rim. 



Menipea petroversa, n. sp. (PI. XVII, Fig. 8). 



Zoarium continuous, dichotomously branched. Zocecia bi- 

 serial, elongate, slightly narrowed below ; apei'ture oval, 

 occupying about two-thirds of front ; a small round avicu- 



