PLATE I 



Figs. I, 2. Miliolina insignis, Brady (No. 25). x 14. Fig. i, back view. Fig. 2, oral-end 

 view showing abnormal aperture. For front view see PI. IX, fig. i. 



Figs. 3,4. SpirolocuUna pimlla, sp.n. {No. 11). x 45. Fig. 3, side view. Fig. 4, oral-end 

 view. 



Figs. 5-7. Miliolina labiosa (d'Orbigny) (No. 26). x 45. Fig. 5, side view. Fig. 6, 

 edge-oral view. Fig. 7, oral-end view. 



Figs. 8, 9. Ophthalmidium margaritiferum , Heron-Allen and Earland (No. 44). x 45. 

 Fig. 8, side view. Fig. 9, oral-edge view. 



Fig. 10. Bathysiphon argiHaceus, sp.n. (No. 75). x 20. Showing contorted mass of 

 pseudopodia at apertural end. 



Fig. II. Dendronina arborescens var. antarctica, Heron-Allen and Earland (No. 65). 

 x 25. A fragment attached to zoophyte. 



Fig. 12. Pelospkaera cornuta, Heron-Allen and Earland (No. 49). x 25. Part of a 

 spirit-preserved specimen showing the flexible Astrorhizid filaments of mud 

 and protoplasm emerging from the conical processes. See also PI. IX, 

 figs- 3-4- 



Figs. 13, 14. Astrorhiza polygona, sp.n. (No. 48). x 25. Fig. 13, normal specimen. 

 Fig. 14, abnormal specimen with accessory aperture. 



Figs. 15-17. Pilulina arewotea, sp.n. (No. 69). x 25. Fig. 15, normal specimen showing 

 aperture. Fig. 16, young oval specimen. Fig. 17, a broken test to show the 

 thickness of the wall. 



Fig. 18. Pilulina jeffreysii, Carpenter (No. 68). x 25. A young oval specimen. See 

 also PI. IX, figs. 11-13. 



Figs. 19-21. Sorosphaera depressa, Heron-Allen and Earland (No. 77). x 25. Fig. 19, 

 a single chamber which has become detached from a quadrate colony. 

 Fig. 20, a two-chambered free growing specimen. Fig. 21 , a single chambered 

 specimen sessile on sand grains. 



Figs. 22-24. Sorosphaera socialis, sp.n. (No. 78). x 25. Fig. 22, a young colony of 

 two chambers. Fig. 23, a colony with five chambers. Fig. 24, fragment 

 of a large colony with outer wall denuded. 



Fig. 25. Sorosphaera confusa, Brady (No. 76). x 25. A free colony of many chambers 

 with investing spicules. 



