PLATE XXVI. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Tryplasma Lonsdalei. Eth. fil. 
Transverse sections of three corallites, prepared for the microscope. — x 2. 
Similar section of another corallite cut obliquely with three tabula 1 , one with a central 
dip. — x 2. 
Longitudinal section of a corallite, prepared for the microscope, displaying the septal 
spines and tabula 1 , some of the latter in close groups. — x 2. 
A similar section to Fig. 3. The tabula 1 are here even more clearly grouped, and many 
with downwardly bent edges. — x 2. 
Another longitudinal section with septal spines, tabulae, and listuhe ; the third tabulum 
from the top of the section has an eccentric depression or dip, similar to that visible 
in Fig. 2. — x 2. 
Transverse section of a corallite, exhibiting well developed septal spines on the right- 
hand side, moderately well developed spines on the left, and on the bottom margin 
a few slight crenulations representing the septal lamellae. — x 2. 
One of the fistulae represented in Fig. 5, displaying septal spines at the entrance to the 
tube, highly magnified. 
Tryplasma Lonsdalei, var. sealariformis, Eth. fil. 
Longitudinal section of a corallite, prepared for the microscope, exhibiting two 
rejuvenescent buds. — -x 2. 
Transverse section, prepared for the microscope, of four rejuvenescent buds, two on the 
point of separating into distinct corallites. — x 2. 
Similar section of two rejuvenescent corallites and a portion of the parent. — x 2. 
Tryplasma Lonsdalei, var. minor, Eth. fil. 
Portion of a corallum, exhibiting a profuse development of fistulas. 
