Page. 

 B'ig. 1. Zaphrentis excentkica 52 



1. An oblique upper view, showing the excentric calice, with its margins broken away. 



1 a. A longitudinal section of same, mainly as exposed by fracture, showing the very 

 broad tabulae {t) ; and at (v) the large vesicular space on the ventral side. The 

 points marked (s, s, s) show the lateral surfaces of the septa, which are marked 

 with curved strife ; while the points {g, g, g, g) show the surfaces of the septa 

 ground smooth; {I) is the fossula. 



1 6. A dorsal view of the coral as seen with the epitheca worn or weathered off, so as to 

 show the edges of the septa divaricating along the middle of the dorsal side. 



1 c. A side view of same specimen. 



1 d. A transverse section of same, nearly at the middle. 



