PLATE XXV. 
Tryplasma Lonsdalei, var. scalariformis, Elli.Jil. 
Fig. 1. Section of a piece of limestone, prepared for the microscope, with corallites both in 
transverse and longitudinal section.— x 2. 
Fig. 2. Longitudinal section of part of a corallite, showing incomplete fistula;. — x 2. 
Fig. 3. A similar section of another corallite, with a fistula cut across, and again enclosed in a 
second wall. — x 2. 
Fig. 4. Transverse section of a corallite, prepared for the microscope, exhibiting long septal 
spines, and the cut edge of a tabula. — x 2. 
Tryplasma Lonsdalei, Etli.JU. 
Fig. 5. Longitudinal sections of portions of two corallites, prepared for the microscope, showing 
oblique, curved, or rolling tabuhe and septal spines. — x 2. 
Tryplasma Lonsdalei, var. minor, E/h. fil. 
Fig. 6. Transverse sections of three corallites, prepared for the microscope, showing the re’atively 
strong septal spines in this variety. — x 2. 
Fig. 7. Similar longitudinal sections, one of the corallites displaying incipient fistulae — x 2. 
Tryplasma liliiformis, Eth.JH. 
Fig 8. Longitudinal section of portion of a cora'lite, prepared for the microscope, showing 
complete and incomplete tabuhe. — -x 2. 
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