OF THE ‘PORCUPINE’ EXPEDITIONS. 481 
Fig. 1°. Aglaophenia dromaius, portion of stem, with corbula, magnified. 
Fig. 2. Aglaophenia elongata, natural size. 
Fig. 2". Aglaophenia elongata, portion of hydrothecal ramulus magnified. 
Fig. 2’. Aglaophenia elongata, corbula magnified. 
Fig. 3. Halicornaria ramulifera, natural size. 
Fig. 3°. Halicornaria ramulifera, a portion magnified. 
Figs. 3°, 3°. Halicornaria ramulifera, portions still further magnified. 
Fig. 3°. Halicornaria ramulifera, portion of stem close to the root, magnified, showing 
its fascicled condition. 
PLATE LXVIII. 
Fig. 1. Cladocarpus formosus, natural size. 
Fig. 1°. Cladocarpus formosus, portion of stem, with aay and gonangial ramuli, 
magnified. a@,a. gonangial ramuli. 
Fig. 1’. Cladocarpus formosus, hydrotheca magnified (front sem 
Fig. 2. Diplopteron insigne, natural size. 
Fig. 2°. Diplopteron insiqne, portion magnified. 
Fig. 2°. Diplopteron insigne, portion of hydrothecal ramulus (profile). 
Fig. 2°. Diplopteron insigne, portion of hydrothecal ramulus (front view). 
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