PLATE 75. 
Fig, 1. 334. 1. Favistella stellata. (Pag- 275.) 
1 a. A fragment of this coral, showing a vertical section, with an oblique section of the extremities of the 
tubes. 
1 b. A transverse section of the cells, showing the starlike extremities. 
1 c. An enlarged view of the extremities of several cells. 
Fig. 2 . 101 . 2 . Ch^tetes lycoperdon. (Pag- 276.) 
2 a, b. The bases of two hemispherical forms, where the tubes have a barely perceptible extension. 
2 c. A fragment of a ramose form, one of the largest occurring in this group. 
2 d. A subhemispheric form, which commenced its growth upon the column of a crinoid. 
2 e. A fragment of stone, with several ramose forms associated with a crinoidal column, a small Murchisonia 
and Orthis testudinaria. 
2 f. Magnified section of a*ramose form, showing the columns to be nearly parallel to the axis of the specimen. 
Fig. 3. 
335. 
1 . Discophyllum peltatum. 
(Pag. 277.) 
Fig. 4. 
336. 
1 . ( Undetermined.) 
(Pag. 277.) 
