Tertiary Polyzoa of Victoria. , 163 



Caiwellia otwayensis, n. sp. (PI. XVIL, Fig. 3). 



Zoarium phytoicl, dichotomously branching. Zooecia infundi- 

 buliform, in pairs, back to back, each pair facing at right angles 

 to the adjoining pairs. Thyrostome horizontal, semi-elliptical ; 

 peristome irregularly projecting outwards ; occasionally a small 

 oval sessile avicularium on the inner edge of the peristome 

 having a triangular mandibular cavity separated by a bar from 

 a small semi-circular area ; a few pores on the inner edge of the 

 zocecia, also on the tubular prolongation. 



Locality. — Aire River, Cape Otway. (Messrs. Hall and 

 Pritchard). 



This genus has not been found fossil before. 



Fig. Zb is drawn from a fragment and shows the upper part 

 of two zocecia seen from above ; there are two perforations, 

 indicating the position of avicularia. 



Fig. Zc shows a perfect avicularium with the cross-bar. 



Cellularia triangulata, n. sp. (PI, XVIL, Fig. 4). 



Zoarium continuous. Zocecia biserial, somewhat turbinate. 

 Aperture oval, occupying about two-thirds of the area of the 

 zooecium ; margin thickened ; a sessile avicularium below the 

 aperture with an acute mandible opening upwards and inwards ; 

 there are indications of a marginal spine on the exterior side of 

 the zocecia near the top. Dorsal surface of the zoarium very 

 smooth, elevated longitudinally into a prominent ridge, making 

 the zoarium triangular in section ; zocecia totally undefined. 



Locality. — Bairnsdale. (J. Dennant). 



A single specimen. I am doubtful whether this should be 

 referred to Cellularia or Afenipea, as the species of the former 

 genus are without avicularia as a rule, and those of the latter 

 have marginal avicularia which this species has not, but, I think, 

 considering the zoarial character it had better be placed in 

 Cellularia at present. 



Scrupocellapia glomerata, n. sp. (PI. XVIL, Fig. 5). 



Zocecia quadri-serial elongate, marginal ones somewhat pyriform 

 in front ; aperture elongate with a broad granular margin sloping 

 inwards, sometimes slightly constricted near the upper part ; a 



