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EXPLANATION OF 
Fig. 4. Seriularia arbuscula, p. 84. 
a. The natural size. 
B. Branch with its cells, magnified. 
C. Ovarium. 
5. Idia pristis, p. 87. 
a. Of the natural size. 
B. The front of a branch, magnified. 
C. The back ditto. 
D. An insulated cell, greatly magnified. 
E. Transverse cut of a magnified branch. 
6. Clytia urnigera, p. 89. 
a. Of the natural size. 
B. Cells magnified. 
C. Ovarium. 
PLATE VI. 
Fig. 1. Laomedea Antipathes y p. 90. 
a. Of the natural size. 
B. Fragment of a branch, magnified. 
2. Thoa Savignii, p. 93. 
a. The natural size. 
B. Branches magnified. 
C. Ovaria. 
3. Salacia tetracyttara , p. 93. 
a. The natural size. 
B. The lower part of a branch, magnified. 
C. Ovarium. 
4. Naisa reptans, p. 99. 
A. This figure was copied from Trembley. 
Naisa lucifuga, p 99. 
A. Copied from Vaucher. 
5 . 
