PLATE LIU. 



FIGS. 



1-3. Amaroucium proliferum M. Bdw. (p. 7) 1. A 

 small colony : natural size. 2. A larger colony : 

 natural size (M. Edwards, pi. i, f. 3). 3. A 

 system : enlarged (M. Edwards, pi. i, f. 3a). 



4-6. Amaroucium albicans M. Edw. (p. 9) 4. A cluster 

 of colonies : natural size. 5. A system : x 5. 

 6. A globular colony found on the upper surface 

 of a stone, and two stalked colonies found sus- 

 pended from a projecting piece of rock : natural 

 size (M. Edwards, pi. i, f. 31). 



7. Amaroucium pa-pillosum Alder, (p. 10) Part of a 

 colony of two systems : natural size. 



