PLATE 39. 



Fig. 1. 528. 5. Cladopora multipoua. (P^g- ]4;().) 



1 a. A part of a broken and macerated specimen, showing its irregularly reticulated character. 

 1 6. A fragment showing the terminations of several small branches, with a portion enlarged 1 b\. 

 1 c. A fragment enlaiged, showing the forms of the mouths of the cells where little worn. 

 1 il. A similar portion enlarged, from a surface somewhat more worn than the preceding specimen. 

 1 e. A fragment where the surface is much worn, presenting simple circular pores on a smooth surface. 

 1 /. A longitudinal section, showing the interior structure of the coral. 



1 g-. A transverse section of a single stem, showing radiating tubular cells. 



Fig-. 2. 529. 6. Cladopora macrophora. (P^g- 140.) 



2 a. A fragment of a frond having the cells filled and solid, separating in prismatic forms. 



2 b. A portion enlarged, showing the structure. 



Fig. 3. 530. 7. Cladopora reticulata. ( P^g- 141.) 



3 a. A part of a large frond, showing the branches and reticulations of the natural size. 



3 b. An cnlai-gcd portion, showing the form and arrangement of the cells upon the surface* 



3 c. A similar enlargement where the surface is worn. 



S d. A longitudinal section enlarged, showing the interior arrangement of the tubular cells. 



3 c. A fragment of anotlier frond having only six longitudinal rows of pores on the branches, which gives a 



greater lateral distance between the openings on the surface, though presenting no appreciable dif- 

 ference in the longitudinal distance. 



Fig. 4. 531. 1. LiMARiA ramulosa. (P^g- 142.) 



4 a. A single bifurcating branch of this species, somewhat worn. 



4 6. A fragment which is trichotomous. 4 c. The surface enlarged. 



4 d. The end of a stem enlarged, showing the structure. 



Fig. 5. £22. 2. Limaria fruticosa? ( Pag. 143.) 



5 a. A fragment of the natural size, showing a disposition to branch in a palmate form, the section above 



showing Ave distinct centres, from which the cells radiate. 



5 6. A portion of the surface of the same enlarged. 



Fig. 6. 533. 3. Limaria LA minata. (Pag. 143.) 



G a. The uneven upper surface, showing the apertures of the cells. 



G 6. A vertical section, showing the interruption in the growth of the enveloping laminae. 



G c. The apertures of the cells enlarged, when little worn. 



6 d. The apertures of the cells as they appear when much worn. 



