﻿PLATE III. 



Unless otherwise designated, all the figures are magnified 18 diameters. 



PAGE . 



Fig. 1. Fistulipora CARBON aria, n. sp. Tangential section, ... 45 

 la. A vertical section of this species. On the left side is showD a portion 

 of a macula. 



Fig. 2. Fistulipora prolifica, n. sp. Tangential section showing portion 



of a macula on the left side, 45 



2a. Portion of a vertical section. 

 Fig. 3. Fistulipora excelens, n. sp. A tangential section showing form of 

 zocecia, angular and partially filled interstitial vesicles, which 

 in the lower right hand corner form a macula, .... 46 



3a. A vertical section prepared from a thin, lamellate example. 



3b. Surface of this species, enlarged 12 diameters. Shows the arrange- 

 ment of the zocecia, and one of the macula in the upper right 

 hand corner. 



Fig. 4. Fistulipora (?) clausa, n. sp. A fragment and section of its lower 



end. Natural size, t . 47 



4a. Tangential section. 



46. Half of a vertical section. The median line is drawn beyond the up- 

 per and lower ends of the figure. 

 Fig. 5. Lichenalia concentrica, Hall. Tangential section of this species, 



showing the bidenticulate character of the zocecia, 

 Fig. 6. Cheilotrypa hispida, n. sp. Two fragments of this species, . . 50 

 6a. A tangential section, showing on the left and lower sides the small 



interstitial vesicles. 

 6b. Half of a vertical section, showing the axial tube on the right side. 

 6c and 6d. Two transverse sections, showing the varying diameter of the 

 axial tube. 



Fig. 7. Cheilotrypa ostiolata, Hall, sp. Half of a vertical section, show- 

 ing the irregular axial tube on the left side of the figure, . . 49 

 7a. Half of a transverse section showing the axial tube, and other char- 

 acters of the species observed in sections of this kind. 



Fig. 8. Eridopora macrostoma, Ulrich. A tangential section of this 



species, . 43 



