[Proc. Eot. Soc. Victoria, 23 (N.S.), Pt. II., 1911]. 



Art XXIV. — Further Descriptions of the Tertiary 

 Polyzoa of Victoria. 



Part XI. 



By C. M. MAPLESTONE. 



(With Plates XXXVII. - XL VIII.). 



[Read 13th October, 1910.] 



Catenicella bairnsdalei, n. sp. (PI. XXXVII., Fig. 1). 



Zooecium oval, broad, compact ; with eleven narrow fenestrae. 

 Thyrostome arched above, straight below ; distal margin raised. 

 TS\^o long, deep, uncalcified areas situate laterally : the dis- 

 tal angles produced into acute processes, probably avicularian. 



Locality. — Mitchell River (J. Dennant). 



A single specimen. This is a very solid looking form ; the proxi- 

 mal fenestrae are well defined, the distal ones less so and the 

 interspaces there have the appearance of transverse ribs stretch- 

 ing across the frontal wall. The uncalcified lateral areas are sur- 

 rounded with raised, smooth walls ; those on the right hand side 

 are merged into one long area. 



Catenicella ampla, Waters. (PI. XXXVIL, Fig. 2). 



I have included an illustration of a zooecium of this species as 

 the specimen is much more perfect than any figured in Dr. 

 MacGillivray's Monograph. 



Catenicella cuneiformis, n. sp. (PI. XXXVTI., Fig. 3). 



Zooecium cuneate, ventricose, narrow ; with eleven fenestrae. 

 TEyrostome veiy large, arched above ; lateral and distal margins 

 raised ; a very small sinus in the proximal margin. An acute 

 spinous process at each distal angle with an avicularium below. 



Locality.— Clifton Bank, Muddy Creek (Dr. Hall). 



The very large thyrostome with raised margin, the narrow 

 fenestrae and the angular spinous processes separate this from 

 other species. 



