Tertiary Polyzoa of Victoria. 267 



Catenicella morningtoniensis, n. sp. 

 (PI. XX XV II., Fijr. 4). 



Zooeciuiu oval, elongate, with wide lateral processes and nine 

 to fifteen very narrow fenestrae. Thyrostome arched above, 

 straight below, with a longitudinal ridge above it. Two to 

 three elongated depressed uncalcified areas in the lateral pro- 

 cesses and one on each side above the thyrostome ; a spinous 

 process on the outer angles. 



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



This is near C. marginata, Waters, but the number of the 

 fenestrae is much greater, they are narrower than in that species, 

 and the uncalcified areas on the margin are more numerous. 



Catenicella concinna, n. sp. (PI. XXXVIL, Fig. 5). 



Zooeciuui cuneate, ventricose, smooth ; with nine fenestrae, 

 very slightly depressed. Thyrostome arched above ; lower 

 margin incurved in the centre ; a broad ridge above. Lateral 

 processes are either absent or aborted. Avicularia (?) at distal 

 angles. 



Locality. — Mornington (Dr. Hall). 



This is a very distinct species. It is exceedingly ventricose, 

 with a smooth, shining surface, and there are apparently no 

 lateral processes. The distal angles are not quite perfect, but 

 present indications of having borne avicularia. 



Catenicella elegantissima, n. sp. (PI. XXXVIIL, Fig. 6). 



Ooecium ovoid, smooth ; surmounted by a flattened umbonate 

 process, below which the surface is slightly depressed over about 

 a third of the ooecium ; in the depression there is near the 

 proximal margin a curved row of about 20 small pores, above 

 which is a similarly curved row of 5 or 6 larger pores. Ooecial 

 opening broad ; proximal margin slightly incurved ; a broad 

 sinus in the distal margin. Five narrow fenestrae and a small 

 depressed uncalcified area on each side, below the ooecial open- 

 ing. Zooecia unknown. 



Locality. — Spring Creek (Dr. Hall). 



