PLATE XX. 
Tryplasma princeps, Eth.Jll. 
Fig. 1. Cylindro-obconical corallite, with radiciform basal processes («). 
Fig. 2. Natural longitudinal section of a similar specimen, with crowded tabula?. 
Fig. 3. Calice of a cylindrical example, with six rejuvenescent buds. 
Fig. 4. A much decorticated, slightly curved coral, with thirteen calicino-marginal rejuvenescent 
buds. 
Fig. 5. Calice similar to Fig. 3, with six rejuvenescent buds. 
Fig. 6. Another example, in which there are five small calicino-marginal buds. 
