Plate 59. 



Fir,. ]. Discorbis bertheloti. X 25. D5268. a, dorsal view; h, ventral view; c, 

 side view. 

 2. Cymbalopora poeyi. X 50. D5469. a, dorsal view; b, ventral view; r, side 



view. 

 H. Treiomphnlus buUoidcs. X50, D5576. a, dorsal view; b, ventral view; 

 c, side view. 



548 



