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XIV
Figå. 8, 9. 10. Spicules from basal part, magnified.
Figure 11 a, b) Spicules, double spheres from the polyp-cell, magnified.
Figs. 12, 13. Spicules from the anterior part of the body, magnified.
Figure 14 a, b) Surface, exceedingly thorny spicules from the tentacles, magnified.
Figs. 15, 16. Club-shaped spicules from the tentacles, magnified.
Figure 17. Spicule from the pinnule, magnified.
Figs. 18, 19, 20, 21. Radially spindleshaped and club-formed spicules from outer wall of oesophagus, magnified.
Figure 22. Cruciform spicule (Vierling) from oesophagus, magnified.
— 23. Flat, ramified spicule from do., magnified.
— 24. An embryo (gastrula), taken from the gastric cavity of the female, magnified: a) oral orifice: b) ectoderm.
— 25. A more developed embryo, magnified: a) stomach, with its oral orifice; b) ectoderm.
— 26. A larva detached from the parent animal and affixed to a stalk, magnified: a) the stalk; b) small spicules; c) ec-
toderm; d) entoderm,
PI. VIII.
Figure 1. Haimeia hyalina, attached to Saxicava arctica, magnified: a) ventricose part of the body; b) flat, diskoid basal
part; c) oral orifice; d) oesophagus; e) a double star; f) extremities of the riband-shaped prominences on the
pinnules.
— 2. Ectodermic cells, highly magnified.
Figs. 3, 4, 5. Cruciform spicules (Vierling) from body of coral, magnified.
— 6, 7. Club-shaped spicules do. do.
Figure 8. Spindleshaped spicules do. do.
— 9. A piece of a tentacle from body of coral, magnified: a) spicules at base of pinnule; b) the riband-shaped promi-
nences on the aboral surface of the pinnule, densely beset with nematocysts,
— 10. A branch of Briareum Frielei, natural size: a) a knob on the branch; b) astral opening for the retracted polyp;
c) coenenchym; d) axis.
— II. Transverse section of axis, natural size: a) coenenchym; b) axis.
— 12. Oral disk and tentacles of a polyp, magnified: a) pinnule; b) oral disk; c) mouth.
— 13. Transverse section of a branch, magnified: a) connective tissue; b) prolongation of connective tissue; c) longi-
tudinal canal in the coenenchym; d) a longitudinal canal in the axis, with its epithel; e) calcareous rods; f) limit
between the coenenchym and the axis.
Figs. 14, 15, 16. Single and double stars from surface of coenenchym, magnified.
Figure 17. Long thorny spindles from the inner coenenchym, magnified.
— 18. Cruciform spicule (Vierling) from do. do.
— 19 a, b, c, d) Double stars from the polyps, magnified.
Figs. 20, 21. Rosettes from the pinnules of the tentacles, magnified.
Figure 22. A tentacle with its calcareous corpuscles, magnified.
Figs. 23. 24. Calcareous rods from the axis, magnified.
Figure 25. An assemblage of such rods, magnified.
— 26. Longitudinal section of a knob, magnified: a) zooid with eggs.
Pl. IX.
Figure i. Paragorgia nodosa, natural size: a) trunk; b) basal part; c’, the branch that divides; d) terminal knob of a branch,
with polyp; e) the branch between the knobs.
— 2. A retracted polyp, surrounded by zooids, magnified: a) lower part of polyp-body; b) zooids.
— 3. An extended polyp, magnified: a) body of polyp; b) tentacles.
— 4. Two polyps with zooids, magnified: a) oesophagus, with septa and calcareous corpuscles; b) gastral filaments;
c) zooids.
— 5. Longitudinal section of Paragorgia arborea, magnified: a) zooids with eggs; b) a polyp without generative organs.
— 6. Thorny spindle from the coenenchym of Paragorgia nodosa, magnified.
— 7. Double star from surrounding of a zooid, magnified.
— 8. Transverse section of axis, magnified: a) connective tissue; b) longitudinal canals; c) spicules.
— 9. A longitudinal canal in the axis, magnified: a) epithelial cells; b) spicules.
— 10. A thorny spindle from the axis, magnified.
— II. Single star from the axis, magnified.
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