RGD eta) 
Cot 25 
Sue Seog 
E> G2 ES 
DESCRIPTION OF THE PLATES. 
PLATE XIX. 
. Figs. 1, 2. Plumularia megalocephala. 
Natural size. 
A portion of a branch with pinne, magnified. 
Figs. 3-7. Halopteris carinata. 
Entire colony, natural size. 
Portion of stem with pinnz, magnified. 
Portion of a pinna, still further magnified; lateral view. 
Same, front view. 
Same, back view. 
PLATE XX. 
Figs. 1-4. Plumularia geminata. 
Natural size. 
A portion, magnified. 
A portion, still further magnified ; front and back view of pinne. 
Lateral view of pinna. 
PLATE XXI. 
Figs. 1, 2. Antennularia simplex. 
Natural size. 
A portion, magnified. 
Figs. 3-6. Antennopsis hippuris. 
Natural size. 
A portion, magnified; with male (?) gonangia. 
Portion of a pinna, still further magnified. 
Portion of a colony with female (?) gonangia. 
Figs. 7, 8. Hippurella annulata. 
Entire colony, natural size. 
Portion of a branch with pinne, magnified. 
TG VND OCC ILIE 
Figs. 1-5. Monostechas dichotoma. 
Entire colony, natural size. 
A portion, magnified. 
Portion of a pinna, still further magnified; front view. 
Same, lateral view. 
Young gonangium. 
Figs. 6, 7. Antennella gracilis. 
Entire colony, natural size. 
One of the pinna-like stems, magnified. 
PLATE XXIII. 
Figs. 1-4, Aglaophenia ramosa. 
Natural size. 
Portion of a branch with pinne, magnified. 
Hydrotheca, still further magnified ; front view. 
Same, lateral view. 
Figs. 5-8. Aglaophenia rhynchocarpa. 
An entire colony, natural size. 
Portion of a pinna, magnified ; lateral view. 
Hydrotheca of same; front view. 
Corbula, magnified. 
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