Tertiary Polyzod of Victoria. 5 



on one side large, cui'ved ; on the other aborted. Fenestrfe 13 

 round submarginal. Thyrostome arched above ; lower lip with a 

 wide sinus, in each angle of which is a small round papilla. 



Locality. — Muddy Creek. (T. S. Hall). A single specimen. 



This is allied to S. pukhella, but the lateral processes are much 

 wider than even in recent specimens of that species ; the papillae 

 at the angles of the sinus in the lower lip of the thyrostome are 

 peculiar and the whole zooecium is very flat, the only indication 

 of the shape of the zooecial cell being tlie row of pores. 



Stpongylopora nitida, n. sp. (PI. I., Fig. 7). 



Zooecium oval, front slightly convex ; fourteen oval sub- 

 marginal fenestrte. Thyrostome arched above, lower lip with 

 a wide, quadrate sinus in the centre. Lateral processes with 

 smooth supra-avicularian processes extending upwards as acute 

 rostra. Avicularia small, on a level with the thyrostome. 



Locality. — Muddy Creek. (T. S. Hall). A single specimen. 



This is allied to S. coniplanata but is distinguished by the 

 convexity of the zocecium, the broad quadrate sinus in the 

 lower lip and the acuminate supra-avicularian processes. 



Strongylopopa ampullacea, n. sp. (PL I., Fig. 8). 



Zooecium oval, vasiform dorsally ; lateral processes very wide, 

 smooth ; a small avicularium at each upper angle ; fenestrae 

 fourteen round perforations. Thyrostome suborbicular. 



Locality.— GYxiton Bank, Muddy Creek. (T. S. Hall). A 

 single specimen. 



It is allied to 5. expansa, S. pulchella, S. complanata., and 

 6". ?iitida, but it has not the suboral pore of the first-named, nor 

 sinus in the lower lip of the other species. 



Strongylopopa cuneifonnis, n. sp. (PI. I., Fig. 9). 



Zooecia elongated, cuneiform ; thyrostome arched above, 

 nearly straight below, with a small denticle on each side, near 

 the lower angles ; lateral processes only visible in upper portion, 

 where they are wide, retrocedent, with small avicularia at outer 

 angles and long, pointed rostra directed upwards and somewhat 

 dorsally. 



