PLATE I. 



Page. 



HOLOCYSTITES GYKINUS, n. 8p 5 



Fig. 1. Ventral view. 

 Fig. '-2. Posterior view. 

 Fig. 8. Summit view. 



BELEMNOCYSTITES WETHERBYl, U. 8p 9 



Fig. 4. Dorsal view of the specimen figured by Prof. Weiherby. 

 Fig. 5. Dorsal view of the type specimen. 

 Fig. 6. Ventral view of the same. 



HOLOCYSTITES SPLENDENS, 11. 8p 7 



Fig. 7. Left anterior view. 

 Fig. 8. Right posterior view. 

 Fig. 9. Summit view. 



