Page. 

 Fig. 1. Zapiirentis ? (uudt. sp. ) 58 . 



1. A side view of a portion of the corallnm, natural size. 



Fig. 2. Campopiiyllum (nndt. sp.) 57 



2. A side view of a weatbered specimen, showing the edges of the septa (slightly too 



wide apart), and the crowded, complex vesicular structure between them. 

 2 fl. A longitudinal section of the same, showing the very broad tabulae, surrounded by a 

 narrow vesicular zone. 



2 6. A transverse section of same, showirg the dissepiments to be (at some places) much 



more crowded between the septa in the vesicular zone than would be indicated by 

 the longitudinal section. 



Fig. 3. Cyaihophyllum (Campophyllum 1) Nevadense 60 



3. A much-weathered specimen (side view) showing the edges of the septa and dissepi- 



ments, with an oblique view of the calice filled with hard calcareous matter. ■ 



3 fl. A vertical section of a part of the same specimen, showing the tabulae and vesicular 



dissepiments represented by dark lines, as far as they can be made out. The dark 

 space above shows the very deep calice (with a nearly flat bottom) filled with 

 dark calcareous matter. 



3 6. Is a transverse section at near the middle of the ccrallum. 



Fig. 4. C YATHOPHYI-LUM SUBCvESPITOSUM CO 



4. A specimen consisting of several corallites lying together in the matrix, with the 



epitheca mainly removed by weathering. 



4 «. A transverse section of one of the same. 

 4 6. A longitudinal section of a part of same. 



