Tertiary Polyzoa of Victoria. 'Ill 



Locality. — Mitchell River (J. Dennant). 



The frontal edges of the lateral and distal walls of the zooecia 

 are apparently eroded, and are of a dark colour, probably the 

 animal tissue of the polypide mineralised. The lateral and oral 

 shelves are minutely granulated, not perforated. In the " A " 

 zooecia the cryptocyst and the median process only are seen, 

 the polypide tube being either hidden or broken away, but in 

 the lower " B " zooecium, of which only the distal portion is 

 preserved, the polypide tube is present, it descends towards the 

 base, and is produced distally a considerable distance. 



Steganopoi^ella bairnsdalei. (PI. XLITI., Fig. 2Sa). 



Zoarium in vincularian form. Zooecia dimorphic, elongated ; 

 arched and overlapping distally. Cryptocyst depressed dis- 

 tally, occupying about two-thirds of the length of the zooecia ; 

 coarsely perforated. Oral arch incurved at the proximal ends. 

 Oral shelf forming a subtriangular arch in the " B " zooecia. 

 Polypide tube showing only as an opening near the distal margin 

 of the cryptocyst. 



" A " zooecia 1 to 1.2 mm. long, 0.4 mm. wide. 



"B" zooecia 1.6 mm. long, 0.6 nuu. wide. 



Locality. — Mitchell River (J. Dennant). 



The zooecia are smaller and narrower in proportion than those 

 in the preceding species ; the oral arch is incurved at the proxi- 

 mal ends, showing the condyles. The details are not well jire- 

 eerved, only the upper part of the polypide tube is seen in the 

 " A " zooecia. In the right-hand upper "' B " zooecium the 

 median process extends distally beyond the opening of the poly- 

 pide tube, it is straight, with projecting angles, and the 

 oral arch is of abnormal form ; the one in the " B " zooecium at 

 the base of the specimen being of normal shape. 



Steganopopella cliftonensis, n. sp. (PI. XLIV., Fig 29). 



Zoarium encrusting. Zooecia dimorphic, oval, overlapping dis- 

 tally. Cryptocyst occupying nearly half the length of the 

 zooecia, tinely perforated. Polypide tube asymmetrical, pro- 

 longed distally ; median process with flanges connecting poly- 



