12 



but more open. The flatness and peculiar ornamentation of the 

 base distinguish it. 



Locality and Horizon of the species and variety. — Muddy- 

 Creek Miocene beds, near Hamilton, Victoria. 



EXPLANATION OF PLATES. 

 Plate I. 



Pig. 1. Lunulites (Gupularia) crassa : a, zoooecia, magnified ; b, 

 portion of base, magnified : c, zoarium, natural size. 



Fig 2. Lunulites (Cupullaria) rutella : letters as above. 



Pig. 3. Lunulites emgulopora : letters as above. 



Pig. 4. Lunulites aperta : letters as above. 



Pig. 5. Lunulites cupola : letters as above. 



Pig. 6. Lunulites magna : a, b, zoarium, natural size ; c, zoooecia, 

 highly magnified ; d, outline of base, natural size. 



Plate II. 



Pig. 7. Lunulites exigua : a, zoarium, much magnified ; b, 

 zoooecia, highly magnified ; c, part of base, magnified. 



Pig. 8. Selenaria punctata : a, zoooecia, and b, portion of under 

 surface, much magnified ; c, sections of two zoaria, natural 

 sizes. 



Pig. 9. Selenaria marginata : a, zoooecia, and b, portion of 

 under surface much magnified ; c and d, section and out- 

 line of zoarium, natural sizes. 



Pig. 10. Selenaria parvicella : «, zoooecia, and b, portion of 

 base, magnified ; c, zoarium, natural size. 



Pig. 11, Selenaria concinna : a, zoooecia, and b, portion of under 

 surface, both magnified ; c, a vibracular cell showing the 

 peculiar teeth-like projections, much magnified ; d and e, 

 outline and sections of zoarium, natural sizes. 



Pig. 12. Selenaria alata : a, zoooecia, highly magnified ; b, part 

 of base, magnified ; c, zoarium, natural size. 



