PLATE 9. 



Fig. 1, 2, 3. 414. 4. RusopHYcus bilobatus. (Pag. 24.) 



1. A well marked specimen witli a stipe attached. 



2. A flattened specimen, showing the point where a .stem was broken ofF. 



3. A large and well preserved specimen, showing no marks for the attachment of a stem. 



Fig. 4. Stems of a marine plant. (Pag. 25.) 



