[089]

Fig. l. Caryophyllia arbuscula, nat. size, with the animals expanded. (Mem. da Mus. d'Hist. Nat. Tom. 6, Pl. 15, f. 2.)

Fig. 2. The animal of Fig. l. magnified; as seen from above.

Fig. 3. Vertical section of the cup of Meandnina labyrinthica, with the animal placed within it. (Mem. du Mus. d'Hist. Nat. Tom. 6, Pl. 16, 10 b.)

Fig. 4. a. The common Actinia, or Sea Anemone, expanded. b. The same contracted within its external skin. (Encyc. Method. Pl. 72. 6.*)

Fig. 5. Madrepora gyrosa. (Ellis. Zooph. Tab.  51. Fig. 2.) [090]

This animal has no calcareous cell, hut contracts itself into a tough fleshy sac, see Fig. 4 b. At a. the Tentacula are represented in a state of expansion. Some of these Polypes present the same display of brilliant colours as many of those which construct persistent calcareous cells.

Fig. 6. Section of the animal of Meandrina viridis, and of the coral in which it is placed.

Fig. 7. Animals of Meandrina limosa as seen from above, and magnified; they are placed in confluent stellated cells similar to those in Fig. 5.

Fig. 8. One of the same, seen in profile, with the edges of its coralline plates behind the tentacula. (Mem. du Mus. d'Hist. Nat. Torn. 6, Pl. 15. 4.)

Fig.9. Caryophyllia Smithii, from Torquay. Nat. size.

Fig. 10. The same, with its animal partially expanded,
within the centre of the coral.

Fig. 11. The animal expanded, and seen from above. (Zoological Journal, Vol. 3. Pl. 13.)