PLATE 40 E. 
Fig. 1. 563. 1. Ceramopora imbricata. ' (Pag- 169.) 
1 a , b. Upper surface of two specimens of different size. 1 c. Profile outline, natural size. 
1 d. Yertical section magnified, showing structure and arrangement of the tubular cells. 
1 e. The centre of fig. 1 a magnified, showing the upper extremities of the tubes bending outward, and the 
form of apertures. 
1 /. A portion of the surface enlarged, looking into the cells, and showing the alternating and imbricating 
arrangement. 
1 h. An individual of the same species, somewhat compressed, and the surface worn. 
1 i. An enlarged portion of the surface of 1 h. 
Fig. 2. 564. 2. Ceramopora incrustans. ( Pag. 169.) 
2 a. The surface of this coral, natural size. 
2 b. The interior of the shell, showing the extension of the coral over the edge of the valve. 
2 c. Profile showing the nodulose surface. 
2 d. An enlargement of the surface, showing form and arrangement of cells. 
Fig. 3. 565. 3. Ceramopora foliacea. ( Pag. 170.) 
3 a. A portion of a frond, natural size. 
3 b. The surface enlarged, showing form and arrangement of cells. 
3 c. A portion of the surface enlarged, showing the foliate impressions and arrangement of cells around them. 
Fig. 4. 566. 3. Rhinopora tuberculosa. ( Pag. 170.) 
4 a. A fragment of a larger frond. 
4 b. A portion of the surface enlarged, showing the papillose cells, and tubercles with smooth summits. 
4 c. A small portion still farther enlarged, showing some variety in the form of the apertures. 
Fig. 5. 567. 1. Lichenalia concentrica.. (Pag. 171.) 
5 a. The concave side of a young specimen. 5 b. The convex side of another larger individual. 
5 c. A larger imperfect frond, one half of which only remains. 
5 d. A fragmentrshowing the condition of these fronds when drifted together. 
5 e. An enlargement of the celluliferous side, where the cells are strongly developed. 
5 /. Another fragment where the cells scarcely rise above the surface. 
5 g. An enlargement of the non-celluliferous side, showing the form and arrangement of the stigmata. 
Fig. 6. 568. 1. Sagenella membranacea. (Pag. 172.) 
6 a. A fragment of an Orthoceras covered by this coral, showing at two points a', a", the growth of other 
corals upon this one. • 
6 b. An enlarged portion of the surface, showing the form and arrangement of the cells in this species, and 
in a species of Callopora which covers it in parts. 
Fig. 7. An incrusting Coral enveloping a Stephanocrinus. (Pag. 173.) 
7 a. The coral enveloping a broken crinoid. 7 b. An enlargement of a portion of the surface. 
Fig. 8. An incrusting membrano-calcareous Coral. (Pag. 173.) 
8 a. A portion of Lichenalia, on which this coral is growing. 
8 6. An enlargement showing mode of growth and character of tubes. 
