782 
ROBERT PAYNE BIGELOW 
EXPLANATION OF FIGURES 
23-25 Tangential sections of another arm of the same specimen. X 195. 
Fig. 23 is about in plane I of fig. 22, fig. 24 is in plane II, while fig. 25 is a section 
from near the base of the arm. 
26 Radial section through the medial line of the rhopalium of a Chrysaora larva 
that is in the Pelagia stage and is 6 mm. in diameter. X 490. 
27 A section of the same specimen parallel to fig. 26, just to one side of the rho- 
palium, showing a cross section of the rudimentary lateral pocket. X 490. 
28-31 Tangential sections across another rhopalium of the same individual. 
X 490. Fig. 28 is in plane I, fig. 29 is in plane II, fig. 30 is III, and fig. 31 in IV of 
fig. 26. 
32 A tangential section oblique to the axis of the rhopalium and through the 
longest diameter of the rudimentary lateral pocket. X 490. 
