Tertiary Polyzoa of Victoria. 275 



of the length of the zooecia ; margins raised ; a small circular 

 avicularium below the aperture. 



Locality. — Mitchell River (J. Dennant). 



A single specimen, consisting of two zooecia only. The 

 avicularium on the distal zooecium is broken away, showing 

 the form of the avicularian chamber. 



Synaptacella recta, n. sp. (Pi. XLL, Fig. 23). 



Zoarium free, erect. Zooecia in single series, pyriform ; aper- 

 ture ovoid ; margins raised. Small oval avicularia on a slightly 

 raised uu;ibo below the aperture. 



Locality. — Griffin's, Moorabool (Dr. Hall). 



Tlie specimen consists of two zooecia only ; it is not in very 

 good preservation, as there is a longitudinal fracture running 

 through the lower zooecium, and the margins of the aperture 

 are not quite perfect, but it is quite distinct from the other 

 species. 



Cellulapia balcomiensis, n. sp. (PL XLT., Fig. 24). 



Zoarium free. Zooecia biserial, ovoid, contracted proximally ; 

 aperture oval, elongated ; margins raised and thickened ; a large 

 round, depressed area in the proximal part of the basal wall, 

 with two smaller ones distally. No avicularia. 



Locality.- — Balcombe Bay, Mornington (Dr. Hall). 



This is a very small form, and though not in good preserva- 

 tion, is quite distinct from ('. trianguJata, Mapl., the only other 

 species hitherto recorded from oiu- Tertiary formations. The 

 two specimens figured differ somewhat, one being in the distal 

 part almost in single series, but I consider they are the same 

 species. 



Cellulapia mooraboolensls, n. sp. (PI. XLL, Fig. 25). 



Zoarium free. Zooecia biserial, directed alternately outwards, 

 elongated, with oval aperture; margins raised and wide, with 

 a narrow inner rim ; a spine on each side near the distal end ; 

 a circular raised avicularium below the aperture. 



Locality. — Griffin's, Moorabool (Dr. Hall). 



