PLATE 40 B. 
Fig. 
1. 550. 1. Striatotora flextjosa. (Pag. 156.) 
1 a. A bifurcating stem, showing the spreading branches to be lax or flexuous. 
1 6. A fragment showing some differences in form of apertures and enclosing spaces. 
1 c. A fragment showing irregular branching. 
1 d. Several apertures with the enclosing angular spaces enlarged. 
1 c. A transverse section enlarged, showing the form of cells internally. 
Fig. 2. 551. 9. Stictopora punctipora. (Pag- 157.) 
2 a. A fragment of a bifurcating stipe of this species, natural size. 
2 6. A portion of the surface enlarged, showing form and arrangement of cells. 
. 2 c. An enlargement of the fragment referred to above, showing the bases of two cylindrical stems con¬ 
nected with the flattened stipe, and the rows of cells continuous from one to the other. 
Fig. 3. 
552. 1. Diamesopora dichotoma. 
(Pag. 158.) 
3 a. A fragftient of a stem bifurcating above and longitudinally divided below, showing the striated interior. 
3 6. The surface enlarged, showing the form and arrangement of apertures. 
3 c. An enlarged portion where the ridges between rows of cells are conspicuous. 
3 d. A fragment of a stem preserving a cylindrical form, and commencing to bifurcate above. In the trans¬ 
verse sections of the two branches, one is solid while the other is hollow. 
Fig. 4. 553. 1. Clathropora alcicornis. (Pag. 159.) 
4 a. A portion of the stipe and branches of an individual of this species, natural size. 
4 6. A portion enlarged, showing the oblong quadrangular apertures. 
4 c. An enlargement of another portion of the surface, showing a difference in the form of the apertures. 
Fig 
other respects from the preceding. 
5 c. An enlarged portion of the surface, showing the arrangement of cells in reference to the perforations. 
5 d. An enlargement where the cells are arranged in series parallel to the axis of the branch. 
5 e. A section of a branch enlarged, showing arrangement and upward divergence of the cells. 
5. 554. 2. Clathropora frondosa. (Pag. 160.) 
5 a. A fragment from a much larger frond. 
6 6. A small fragment where the perforations are smaller, though the coral does not apparently differ in 
