PLATE LXVIII. 



FIG. 



1. LICHENOPORA IIISPIDA, p. 473 ; a young and simple 



colony, with one of the ooecial orifices in the centre. 



2. - , portion of disk. 



3. , one of the mamillse of the composite form. 



4. - , a composite colony in an early stage, 



showing the mode of gemmation : nat. size. 



5. - , adult composite colony, var. /3, nat. size. 



6. , caliculate form, nat. size. 



7. , portion of disk, showing the stellate pores. 



8. , origin of colony. 



9. LICHENOPORA RADIATA, p. 476 ; enlarged and nat. 



size. After Tuffen West. 



10. , one of the ocecial orifices. 



11. LICHENOPORA REGULARIS, p. 479; enlarged (about 



three times) and nat. size. 



