58 DESCRIPTION OF THE PLATES. 
PAGAV TE Vel 
Figs 1, 2. Obelia marginata. 
Fig. 1. Natural size. Drawn from a small specimen. 
Fig. 2. A branch, magnified. Creeping over it is a colony of Lafoéa venusta. 
Figs. 3,4. Lafoéa venusta. 
Fig. 8. Natural size. It is seen creeping over a branch of Obelia marginata. 
Fig. 4. A portion, magnified, creeping over Obelia marginata. 
Fig 5,6. Thyroscyphus ramosus. 
Fig. 5. Natural size. 
Fig. 6. A portion of a branch, magnified. 
PaAV TE vile: 
Figs. 1-3. Oplorhiza parvula. 
Fig. 1. Natural size. 
Fig. 2. Portion of a colony, magnified. 
(a, a) Hydrorhizal appendages. 
Fig. 3. One of the hydrorhizal appendages, still further magnified. 
Figs. 4,5. Obelia longicyatha. 
Fig. 4. Natural size. 
Fig. 5. Portion of a colony, magnified. 
PLATE VIII. 
Figs. 1,2. Campanularia macroscypha. 
Fig. 1. Natural size. 
Fig. 2. Portion of a colony, magnified. 
Figs. 3,4. Lafoéa tenellula. 
Fig. 3. Natural size. 
Fig. 4. Portion of a colony, magnified. 
Figs. 5,6. Cuspidella pedunculata. 
Fig. 5. Natural size. 
Fig. 6. Portion of a colony, magnified. 
PMLA DS 1.€. 
Figs. 1, 2. Lafoéa convallaria. 
Fig. 1. Entire colony, natural size. 
Fig. 2. Distal portion of a colony, magnified. 
PAAVINE xX. 
Figs. 1,2. Lafoéa coalescens. 
Fig. 1. Entire colony, natural size. 
Fig. 2. The same, magnified. 
PAT VAM PED: exis 
Figs. 1-4. Halecium filicula. 
Natural size. 
1 
2. Portion of a pinna with hydranth, magnified. 
Fig. 3. Portion of main stem near its distal extremity, carrying hydrophores and a pinna; magnified. 
4. Distal extremity of a hydrophore with double margin, still further magnified. 
Figs. 5,6. Halecium capillare. 
Fig. 5. Natural size. 
Fig. 6. Portion of a branch, magnified. 
