Art. VI I. — Fitrther Descrij^tions of the Tertiary Polyzoa 

 of Victor Ui..— Part VII. 



By C. M. MAPLESTONE. 



(With Plates VI., VII. and VIII.). 

 [Eead 12th September, 1901.] 



Schizopopella nitidissima, n. sp. (PL VII., Fig. 1). 



Zoarium encrusting. Zooecia oval, convex ; surface rugose, 

 with a row of pores on the margin. G-8 stout spines on distal 

 end. Thyrostome arched above, proximal margin straight with 

 a narrow sinus. An avicularium on a rugose stem on one side 

 of the zooecia near the base ; mandible very acute, with a bar 

 and a semicircular cavity. Primary cell circular, with twelve 

 stout spines round the edge ; opening circular, with two denticles 

 probably the points of the attachment of the operculum. 



Locality. — Mitchell River (J. Dennant). 



A single specimen, and a most interesting one, as it is a young 

 zoarium, and has, what I have never seen recorded in fossil poly- 

 zoa, a primary cell ; the spines are very short and thick, and 

 probably are the bases of longer spines ; the avicularia are also 

 peculiar in having stems. 



Schizopopella vigiians. Waters. (PL Vir., Fig. 2). 



I have several specimens of , this species which is somewhat 

 variable ; some agree with the original description, in having 

 elongated pores all over the surface, others have a single row 

 round the edge and the zoarium is not always quadrilateral, but 

 is always in vincularia form. One specimen bears ooecia, which 

 have not hitherto been described or tigured. They are globose 

 and covered with small shallow pits and granulations. 



Localities. — Aire Coastal Beds (Hall and Pritchard) ; Cape 

 Otway (J. Dennant); Curdles Creek (A. W. Watei's). 



