Z P H 



line of lamellae ; 13 c', same, natural size ; 13 d, transverse section 

 of corallum, natural size ; 13 e, vertical section of same. — p. 224. 



Fig. 14. Orbicella patula, natural size, polyps not expanded; 

 14 a, profile of section of cells, showing outline of lamellae; 14 b, 

 enlarged view of the same ; 14 c, 14 d, vertical sections, natural 

 size; 14 e, transverse section, natural size. — p. 209. 



Fig. 15. Orbicella hyades, transverse view of corallum, 

 natural size. — p. 212. 



Fig. 16. Orbicella excelsa, transverse view of corallum, 

 natural size. — p. 212. 



PLATE 11. 



Fig. 1. AsTRiEA speciosa, part of corallum, natural size; 1 a, 

 profile of cell and ridge, outline of lamellae ; 1 b, lamella enlarged ; 



1 c, transverse section of corallum, natural size ; 1 d, vertical sec- 

 tion, natural size. — p. 220. 



Fig. 2. AstRjEa pandanus, zoophyte, unexpanded, natural size; 



2 a, a few cells of corallum, in outline, natural size ; 2 b, profile of 

 cell, ridge and lamellae, enlarged ; 2 c, vertical section of corallum, 

 natural size ; 2 d, transverse section, ibid. — p. 222. 



Fig. 3. AsTRiEA puteolina, a few cells of corallum, natural 

 size ; 3 a, profile of cells and ridges, and outline of lamellae, natural 

 size ; 3 b, vertical section of corallum, natural size. — p. 223. 



Fig. 4 a. AsTRiEA dipsacea, profile of cell and ridge, and out- 

 line of lamellae; 4 b, same, through longer diameter of cell; 4 c, 

 vertical section of corallum, natural size ; 4 d, transverse section, 

 natural size. — p. 225. 



Fig. 5. Astr^ea porcata, zoophyte unexpanded, natural size; 

 5 a, profile of cell and ridges, and outline -of lamellae; 5 b, same, 

 enlarged ; 5 c, vertical section of corallum, natural size ; 5 d, trans- 

 verse section, ibid. — p. 226. 



Fig. 6. Astrjsa flexuosa, part of zoophyte, with polyps partly 

 expanded ; 6 a, 6 b, tentacles enlarged ; 6 c, view of mouth aperture, 

 enlarged; 6 d, profile of cell and ridges and outline of lamellae, na- 

 tural size; 6 e, vertical section of corallum, natural size. — p. 227. 



Fig. 7. Astr^ea fusco-viridis, part of zoophyte, animal unex- 

 panded ; 7 a, another variety, enlarged; 7 b, vertical section of 

 corallum, natural size ; 7 c, profile of cell and ridge, and outline 

 of lamellae, enlarged. — p. 22S. 



Fig. 8. Astr^a virens, zoophyte, unexpanded; 8 a, portion 

 of corallum, in outline, natural size; 8 b, profile of cell and outline 

 of lamellae, enlarged ; 8 c, vertical section of corallum, natural size ; 

 8 d, transverse section, ibid. — p. 228. 



PLATE 12. 



Fig. 1. Astr^a echinata, zoophyte, natural size; 1 a, vertical 

 section of corallum ; 1 b, transverse section.— p. 229. 



Fig. 2 a. Astr^a fragilis, vertical section of cell and ridges, 

 showing outline of lamellae, natural size; 2 b, same enlarged; 2 c, 

 vertical section, natural size ; 2 d, transverse section.— p. 230. 



Fig. 3 a. Astr;ea magnifica, cells of corallum, natural size ; 3 b, 

 transverse section; 3c, vertical section.— p. 231. 



Fig. 4. AsTRiEA filicosa, cells of a worn corallum, natural 

 size; 4a, transverse section, natural size; 4 b, vertical section.— 

 p. 232. 



Fig. 5 a. AstrtEa versipora, vertical section of cell and inter- 

 vening ridges, showing outline of lamella ; 5 b, transverse section 

 of corallum, natural size. — p. 233. 



Fig. 6 a. AsTRiEA denticulata, vertical section of a cell and 

 intervening ridges, showing outline of lamellae, natural size ; 6 b, 

 transverse section ; 6 c, vertical section. — p. 234. 



2 



Y T E S. :> 



Fig. 7, 7 a, 7 b, 7 c, 7 d. Astr^ea deformis var. ?— p. 236. 



Fig. 8 a. AsTRiEA rigida, vertical section of cells and ridges, 

 showing profile of lamellae, natural size ; 8 b, half of a cell with a 

 vertical section of corallum beneath ; 8 c, size and form of cells ; 



8 d, transverse section of corallum. — p. 237. 



Fig. 9 a. Astr^a reticularis, vertical section of cells and in- 

 tervening ridges or septa, natural size ; 9 b, size and form of cells ; 



9 c, transverse section of corallum, natural size. — p. 237. 



Fig. 10. Astr^ea purpurea, zoophyte, natural size, expanded ; 



10 a, cells of corallum, natural size; 10 b, vertical section, showing 

 profile of lamellae and ridges, enlarged; 10 b', same, natural size; 

 10 c, vertical section of corallum, enlarged ; 10 d, same, natural size; 

 10 e, transverse section, enlarged four diameters. — p. 239. 



Fig. 11. Astr^ea pulchra, zoophyte, natural size; 11 a, polyp 

 enlarged; 11 b, vertical section, showing profile of lamellae and 

 ridges, enlarged ; 11 c, same, natural size; 11 d, vertical section, 

 enlarged; lie, same, natural size; 11 f, transverse section.— p. 240. 



Fig. 12 a. Astr^ea petrosa, transverse section of corallum, na- 

 tural size ; 12 b, vertical section, natural size. — p. 238. 



Fig. 13 a, 13 b. Astr^ea varia, transverse sections of cells, 

 showing profile of cells and lamella? — p. 236. 



PLATE 13. 



Fig. 1. AstRvEA tenella, part of surface of a worn corallum, 

 enlarged one-sixth ; 1 b, vertical section of corallum, natural size, 

 —p. 231. 



Fig. 2. Astrjea favistella, part of surface of corallum, natural 

 size, showing cells ; 2 a, 2 b, profile of vertical sections of cells, 

 natural size ; 2 c, transverse section of corallum, enlarged ; 2 d, 

 vertical section of corallum. — p. 241. 



Fig. 3 a. AstRjEa favistella ? transverse section of corallum, 

 natural size ; 3 b, vertical section of same. — p. 242. 



Fig. 4 a. Astr^a eximia, profile of vertical section of cells, na- 

 tural size ; 4 b, size and form of cells ; 4 c, transverse section of 

 corallum, natural size; 4 d, vertical section, ditto. — p. 242. 



Fig. 5. Astr^ea sinuosa, cells of corallum, natural size; 5 a, 

 profile of vertical section of cells, natural size ; 5 b, transverse sec- 

 tion of corallum, natural size ; 5 c, vertical section, ditto. — p. 243. 



Fig. 6. Astr;ea parvistella, cells of corallum, natural size ; 

 6 a, transverse section of corallum, enlarged ; 6 b, same, natural 

 size; 6 c, vertical section of corallum, natural size. — p. 244. 



Fig. 7. Astr^a favulus, cells of corallum, natural size; 7 a, 

 profile of vertical section of cells, natural size; 7 b, transverse sec- 

 tion of corallum, natural size ; 7 c, vertical section, ditto. — p. 245. 



Fig. 8. Astr;ea cerium, transverse and vertical sections, na- 

 tural size. — p. 245. 



Fig. 9 a, 9 b, 9 c. Astr^ea tesserifera, profiles of vertical sec- 

 tions of cells, natural size; 9 d, transverse section of corallum, 

 natural size. — p. 248. 



Fig. 10. AsTRiEAROBusTA, cells of corallum, natural size; 10 a, 

 profile of vertical sections of three successive cells ; 10 b, similar 

 profile, enlarged; 10 c, transverse section of corallum, natural 

 size; 10 d, vertical section, ditto.— p. 248. 



Fig. 3 1 a, 11 b. Astr^ea heliopora? transverse and vertical sec- 

 tions of corallum, natural size. — p. 250. 



Fig. 12. Astr^ea intersepta, surface of corallum, natural size; 

 12 a, cells enlarged; 12 b, vertical section of cells, showing profile 

 of lamellae, natural size; 12 c, profile of lamellae, enlarged; 12 d, 

 transverse section of corallum, enlarged ; 12 e, vertical section 

 natural size. — p. 246. 



Fig. 13 a. Monticularia microcona, part of surface of corallum, 

 enlarged; 13 b, part of surface of zoophyte, enlarged; 13 c, trans- 

 verse section of corallum, enlarged; 13 d, vertical section, ditto; I3 e 



