| Castanea occurs about half way up, it is that species with rigid compound spines to the cupula. |
| The hair cells of the three semicircular canals are embedded in a gelatinous mass called the cupula. |
| Movement of the head causes the endolymph to flow either toward or away from the cupula. |
| The neuromast organ consists of hair cells and support cells embedded in a gelatinous cupula. |
| Each cupula holding the ink and powder has vermilion inlay with a border frieze of feuilles d'eau which rests on a vermilion pedestal adorned with stylized alternating leafs and flowers. |
