EXPLANATION OF PLATE 54. gy 
Miller considers to have sent off ten branches at 
every joint, five to the interior and five to the exte- 
rior of the petals. 
Fig. 14. One of the largest auxiliary side arms. Some 
of these contained more than 100 joints. See V. I. 
p. 438. (Goldfuss.) 
a, h, c. represent different forms of the joints at different 
parts of the side arms, with their nicely adjusted 
articulating surfaces. 
Figs. 15, 16, a, b, &c. Various modifications of the 
articulating surfaces of the joints composing the 
fingers and tentacula. (Goldfuss, PI. LI.) 
Fig. 17. Magnified extremity of one of the tentacula. 
The two last joints form a very delicate pair of pin- 
cers, to lay hold on its prey. (Original.) 
Plate 54. V. I. p. 442. 
Fig. 1. Caryophyllia arbuscula, nat. size, with the ani- 
mals expanded. (Mem, du Mus. d’Hist. Nat, Tom. 
6, PI. 15, f. 2.) 
Fig. 2. The animal of Fig. 1. magnified ; as seen from 
above. 
Fig. 3. Vertical section of the cup of Meandrina laby- 
rinthica, with the animal placed within it. (Mem. 
du Mus. dTIist. Nat. Tom. 6, PI. 16, 10 b.) 
Fig. 4. a. The common Actinia, or Sea Anemone, ex- 
panded. b. The same contracted within its external 
skin. (Encyc. Method. PI. 72. 6.*) 
Fig. 5. Madrepora gyrosa. (Ellis. Zooph. Tab. 51, 
Fig. 2.) 
to 1 ** H'uraal has no calcareous cell, but contracts itself into a 
1 fleshy sac, see Fig. 4 6. At a. the Tentacula are represented 
dis*^! expansion. Some of these Polypes present the same 
P ay of brilliant colours as many of those which construct ner- 
® ant calcareous cells. 
