PLATE XL VI I. 



DlSCOPHYLLUM PELTATUM (p. 101). 



Fiii. 1. Reproduction of a photograph of the type specimen illustrated by Professor Hall. 



Fig. 2. Reproduction of a photograph of the second specimen mentioned by Professor Hall, which 



shows the concentric strise much more clearly. than does fig. 1. The faintly outlined ring 



near the center is not shown in the figure. 



198 





