PLATE 24. 
Pig. ih. 101. 2. CH#TETES LYCOPERDON. (Pag. 64.) 
1 a. Section of a small hemispherical mass, showing the tubes nearly vertical to the base. 
1b. A portion of the same magnified. 
1c. The base of one of the hemispherical forms, where the polyps have just commenced their operations ; the 
tubes, though distinctly formed, have scarcely a perceptible elevation. The polyps here commenced their 
operations by attaching themselves to a valve of the Orthis testudinaria, and thence extended laterally 
on all sides, 
1d. A small membranous envelope of this coral, from which, in some parts, the tubes have just commenced 
rising : this substance is thin, and concentrically wrinkled on both sides. 
1e. A portion of an irregular massive specimen, showing a tendency to branching more distinctly than the 
specimens represented on Plate 23. 
1 f. A few tubes of the same enlarged, showing the structure before exhibited in the hemispheric masses. 
1 g. A cylindrical branched specimen. 
1A. A portion enlarged, showing the radiated tubes. 
12. Enlarged ends of the tubes on the surface of 1 g. 
1m & 1k. Smaller branched and cylindrical specimens. In these the direction of the tubes is more nearly in 
the direction of the axis of the coral, as shown in 10 - they are, otherwise, similar to the previously 
noticed forms. The opening of the tubes upon the surface being likewise more oblique to the axis, they 
present a different form as represented in 1 n. 
Fig. 2. 102. 3. CH#TETES RUGOSUS. (Pag. 67.) 
2a. The specimen of the natural size. 
2b. An enlarged portion, showing the form of the tubes and the rugose interior. 
Fig. 3. 104. 1. RecepracuLirEs NEPTUNII? (Pag. 68.) 
3 a. The upper surface of the specimen, showing the quadrangular or rhomboidal openings upon the outside. 
3b. A portion of the same enlarged, with a few of the openings, showing the aperture of the cylindrical tube 
within. The opening above is not entirely circular. 
3c. Vertical section of the cylindrical tubes through the centre of the mass, as they appear on a weathered 
surface. As these converge towards the base, the ends only are seen as shown in the figure. 
3d. Three of these tubes enlarged, showing a contraction or stricture near their upper termination, and the 
same below. 
