52 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



PAGE 



Fig. 10. Smittinella osifera, new species 39 



Surface of an ovicelled zoarium exhibiting the very transverse 



outline of the ovicelled zooecia. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. II. Porclla excavata, new species 42 



A wide frond in which the avicularia arc quite visible in their 



excavations. 

 Janjukian beds, Anticline Creek, Dartmoor, Victoria. 



Plate 8 

 (All illustrations on this plate are magnified, X 20, unless otherwise indicated) 



PAGE 



Fig. I. Porclla rhoiiiboidalis parviapcrtura, new variety 43 



Unilamellar specimen with the characteristic small apertures. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. 2. Porclla rhomhoidalis crassimarg'uwta, new variety 43 



Unilamellar zoarium showing the zooecia surrounded by a broad 



margin. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. 3. Hippomcnella verinicnlaris, new species 36 



Fragment of a unilamellar zoarium showing the decoration of the 



ovicells and the two small zooecial avicularia. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. 4. Hippoporclla testu, new species 36 



Fragment of an ovicelled unilamellar zoarium. The large trans- 

 verse aperture, six oral spines and small avicularium are shown. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. 5. Pahnicellaria magna, new species 43 



Fragments of the cylindrical zoarium, natural size, and an example 



on which the zooecia have two oral avicularia. 

 Janjukian beds at Anticline Creek, Dartmoor, Victoria. 



Fig. 6. Porclla opcrculata, new species 42 



Portion of the cylindrical zoarium with calcareous opercula and 



showing the true form of the oral avicularium. 

 Janjukian beds, Anticline Creek, Dartmoor, Victoria. 



Fig. 7. Smittinella magna, new species 39 



Bilamellar ovicelled zoarium showing the large dimensions of the 



zooecia and the very porous frontal. 

 Janjukian beds, Anticline Creek, Dartmoor, Victoria. 



Fig. 8. Porclla baculina, new species 41 



Cylindrical zoarium with wide zooecia. 



Janjukian beds at Mitchell River, Bairnsdale, Victoria. 



Fig. 9. Phylactella cliaptnani, new species 44 



Portion of the incrusting zoarium illustrating the convex zooecial 



frontal, the lyrule and the recumbent ovicell. 

 Balcombian beds at Muddy Creek, Victoria. 



Fig. 10. Costazia convexa, new species 44 



Cylindrical zoarium illustrating the small dimensions and the 



occurrence of an oral avicularium on an umbo. 

 Balcombian beds at Muddy Creek, Victoria. 



