480 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



FIG. 8. Ophiogymna fulgens: 



a, second arm spine, more magnified. 



&, club spines of dorsal surface of the disk. 



c, spines of the dorsal surface of the disk. 



d, first ventral arm spine transformed into a hook. 



e, lateral arm spines. 

 /, tentacle scale. 



g, proximal surface of a vertebra. 

 h, the same, distal surface. 

 9. Ophiogymna funesta: 



a, lateral arm spines. 



I, club spines of the dorsal surface of the disk. 



c, first ventral arm spine transformed into a hook at different levels. 



d, second arm spine. 



e, dorsal arm spine. 



f, proximal surface of a vertebra. 

 ff, the same, distal surface. 



