Plate 1. 



Pennaria pacifica, page 6. 



Figures 1 and 2 by J. H. Einerton. 



Fig. 1. A hydranth from which the filiform tentacles have been cut away, bringing more 

 clearly to view the somewhat irregular arrangement of the capitate tentacles in 

 the adult hydranth. 



Fig. 2. A perfect hydranth of the same. 



Fig. 3. A hydranth, camera sketch, x 40. 



Fig. 4. A colony, natural size. 



Fig. 5. Part of a pinna with a peduncle, x 110. 



Fig. ft. The distal part of a main stem, x 20. 



