Tertiary Polyzoa of Victoria. 67 



Schizopopella mamillata, n. sp. (PI. VII., Fig. 6). 



Zooecia elongated, oblong, flat ; surface covered with large 

 mamillfe, between which are a few minute perforations. Thy- 

 rostome arched above, proximal margin with a long narrow sinus 

 slightly contracted in the middle. A small oval avicularium, 

 furnished with a bar, below and close to the thyrostome on one 

 side of some zooecia. 



Locality. — Jimmys Point, Reeves River (J. Dennant). 



The zooecia vary considerably in size, but the species luay be 

 easily distinguished by the large and uniform size of the 

 mamillae. 



Schizopopella pulvinata, n. sp. (PL VII., Fig. 7). 



Zooecia small, oval ; the central part with a large raised oval 

 area, the centre of which has a longitudinal cleft or depression ; 

 some zooecia are perforated with a few small pores. Thyrostome 

 small, arched above, with a very small sinus in the lower lip ; a 

 small hemispherical umbo sometimes present above it. Ooecia 

 globose. 



Locality. ~G\.\.i\,ox\ Bank, Muddy Creek (T. S. Hall). 



This is a very curious specimen, it is adherent on the intei'ior 

 of a bivalve shell, and the large oval elevated area occupies 

 almost the whole front of the zooecia, obscuring in almost every 

 case the proximal part of the thyrostome. The two perfect 

 ooecia figured have their opercula in situ. 



Schizopopella hispida, n. sp. (PL VII., Fig. 8). 



Zoarium encrusting. Zooecia oval, ventricose ; covered with 

 rough irregular tubercles. Thyrostome arched above, with a 

 narrow sinus in the lower margin. Ooecia globose, subimmersed, 

 very rugose. 



Locality.—lsl\xM^ Creek (H. Butler). 



I do not know which bed this came from. I received it many 

 years ago when at Portland. It is remarkable for the very rough 

 irregular tubercles all over the surface and very difficult to 

 represent. 



