. A hydranth from which the filiform tentacles have been ent away 
. A perfect hydranth of the same. 
. A hydranth, camera sketch. x 40. 
. A colony, natural size. 
. Part of a pinna with a peduncle. x 116. 
. The distal part of a main stem. x 20. 
—) ee as 
PLATE 1. 
Pennaria pacifica, page 6. 
Figures 1 and 2 by J. H. Emerton. 
clearly to view the somewhat irregular arrangement of the capi 
the adult hydranth. 
