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PLATE I. 
Figure I. Minilya princeps sp. nov.: Part of the celluliferous surface of the 
holotype, showing the two rows of zooecial apertures, and the double row of 
weathered nodes along the centre of the branch (No. 20945, Univ. of Western 
Australia), x 10. 
Figure 2. Fenestrellina disjecta sp. nov.: Part of the celluliferous surface of 
the holotype (No. 2793a, Univ. of Western Australia), x 10. 
Figure 3. Fenestrellina horologia Bretnall: Part of the celluliferous surface of a 
specimen from the Nooncanbah Series at Keevie’s Well, 8 miles north of Mt, 
Anderson Home.stead (N’o. 20942, University of Western Australia), x 10. 
Figure 4. Fenestrellina valotlis sp. nov.: Part of the celluliferous surface of tlie 
holotype (No. 2793c, Univ. of Western Australia), x 10, 
Figure 5. Minilya duplaris sp. nov.: Part of the celluliferous surface of the 
holotyjie (No. 2793d, Univ. of Western Australia), x 10. 
Figure 6, Fenestrellina horologia (Bretnall) : Part of figure 3 enlarged to x 20, 
to show the single row of high nodes, and the apertures, which are stellate 
where they are best presein'ed. 
Figure 7. Minilya duplaris sp. nov.: Part of figure 5 enlarged to x 20, to show 
the arrangement of the apertures and the double row of nodes. 
