Fig. 1. — Heterastraea rhsetica, sp. nov., showing, by the serial 

 calices, the growth by fissiparity. X 8. 



y ' ".>...■■■. 



^V 



F. H. Michael del. 



Fig. 2. — Heterastaa rhcetica, sp. nov., showing, by the small 

 rounded calices in the upper part of the figure, the growth by 

 gemmation. X 3. 



Sfei 



*>, ** Ml;/ <<b- '■ v 1 * 



%fo 





F. H. Michael del. 



