Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Figs. 6 and 7 show the nodal thickenings in the perisare. 
Figs. 8 and 9 show the rim or margin of the hydrothecae. x 116. 
Fig. 10. One of the supra-calycine nematothecae with its two openings. 
Bm wow 
. The colony, natural size. 
. Part of a pinna seen from the lower side. x 30. 
. Part of a pinna in side view. x 30. 
. A portion of the upper, simple part of the main stem. x 30. 
5. 
PLATE 14 
Cladocarpus distomus, page 17. 
Figures from camera drawings finished by J. H. Emerton. — 
A portion of the main stem where it is compound, composed of two tubes 
