604 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [102] 
EXPLANATION OF PLATES. 
Unless otherwise stated, the figures on all the plates were made by Mr. J. H. Emerton. 
PuaTE I, 
Yic. 1. Umbellula Bairdii V. Side view of the polyps and upper part of the stem, 
natural size; la, lower end of the stem and bulb of the same. 
T1G.2. Thesome. Ventral view, showing the tentacles in partial retraction. 
WG. 3. Umbellula Guntheri K. Ventral view of the polyps and upper part of the 
stem, natural size. 
Fia. 3a. The same. Dorsal view. 
lig. 3b, The same. Lower end of the stem and bulb, 
