12 Z P H 



ing the interior structure ; 1 c, part of a visceral lamella with 

 clusters of ovules attached. — p. 635. 



Fig. 2. Tubipora fimbriata, polyp, enlarged ; 2 a, extremity of 

 tentacle, more enlarged (natural size, nearly same as in fig. 1). — 

 p. 634. 



Fig. 3. Gorgonia TRICHOSTEMMA, natural size; 3 a, polyp, en- 

 larged ; 3 papilla of tentacle, enlarged. — p. 665. 



Fig. 4. Spoggodia celosia, part of a zoophyte, natural size ; 

 4 a, polyp, enlarged, with an adjoining calcareous spiculum ; 4 b, 

 section of branch, natural size ; 4 c, magnified view of surface, 

 showing the calcareous spicula in position ; 4 d, part of a spicu- 

 lum, much magnified ; 4 e, a thin longitudinal section of the same, 

 through the middle, obtained by polishing it down, showing the 

 interior appearance, under a high magnifying power, the dark 

 spots corresponding each to a surface protuberance. — pp. 626, 711. 



Fig. 5. Atjlopora tenuis, corallum, natural size, adhering to 

 dead coral. — p. 631. 



Fig. 6. Alcyonium glaucum, unexpanded, natural size. — p. 623. 



Fig. 7. Gorgonia suffruticosa, unexpanded, natural size ; 7 a, 

 polyp, enlarged ; 7 a', same, natural size. — p. 665. 



PLATE 60. 



Fig. 1. Corallium secundum, natural size; 1 a, part of surface 

 of dried specimen, magnified. — p. 641. 



Fig. 2. Gorgonia flexuosa? natural size; 2 a, expanded polyp, 

 enlarged. — p. 660. 



Fig. 3. Distichopora violacea, corallum, natural size; 3 a, end 

 view of extremity of a branch, enlarged. — p. 703. 



Fig. 4. Distichopora gracilis, corallum, natural size. — p. 704. 



Fig. 5. Distichopora gracilis ? natural size ; 5 a, same, en- 

 larged ; 5 b, view of margin, enlarged. — p. 704. 



Fig. 6. Allopora Bella, corallum, natural size ; 6 a, surface, 

 enlarged ; showing cells. — p. 696. 



Fig. 7. Allopora flabelliformis, extremity of a branchlet, 

 natural size. — p. 694. 



Y T E S. 



Fie:. 8. Marginopora vertebralis, natural size. — p. 705. 



Fig. 9. Marginopora vertebralis ? var. plicata, natural size ; 

 9 a, margin, enlarged ; 9 b, view of horizontal section, enlarged. — 

 p. 706. 



PLATE 61. 



Figs. 1 a, 1 b. Polytrema echinulata, different varieties, natural 

 size ; 1 c, 1 d, the small prominences, magnified ; 1 e, section of 

 corallum, magnified. — p. 707. 



Fig. 2. Polytrema crustula, natural size ; 2 a, part of same 

 magnified. — p. 707. 



Fig. 3. Polytrema brunnescens, natural size. — p. 707. 



Fig. 4. Polytrema biesenterina, natural size ; 4 a, portion mag- 

 nified, showing the character of the margin. — p. 708. 



Fig. 5. Antennularia cyathifera, much enlarged ; 5 a, natural 

 size. — p. 687. 



Fig. 6. Sertularia mimosa, frond in mere outline, showing 

 only its general form, excepting one branchlet with partially ex- 

 panded polyps; 6 a, one of the polyps fully expanded, enlarged, 

 —p. 687. 



Fig. 7. Laomedea gracilis, enlarged; 7 a, natural size; 7 b, a 

 polyp, enlarged, partly contracted, and seen for the most part 

 through the transparent calicle. — p. 689. 



Fig. 8. Laomedea simplex, enlarged ; 8 a, natural size ; 8 b, 

 rostriform mouth. — p. 690. 



Fig. 9. Campanularia ? — p. 690. 



Fig. 10. Coryna capillifera, enlarged. — p. 692. 



Fig. 11 a. Liagora rubriceps, natural size; 11 b, portion en- 

 larged; 11 c, sporidia, more enlarged; 11 d, part of a transverse 

 section of stem, showing the cells within cut across and partly 

 disarranged ; e, e' longitudinal cellules, enlarged 150 diameters ; 

 11 f, cellules detached, with a lateral branch of cellules passing to 

 the sporules at apex; 11 g, one of the sporules magnified 400 

 diameters. — p. 92. 



