EXPLANATION OF PLATE VIII. 



SCYPHOMEDUS AE . 



Acromitus rabanchatu, sp. nov. 

 Fig. i. — Adult specimen (reduced). 



The specimen has been preserved in formalin for some time and the bell was therefore flatter than 

 in life. 



Fig. ia. — Plan of the disk of the same specimen seen from below on the removal 



of the arms. 



One octant (X) of the margin has been removed. 



,, ib. — A single arm seen in profile. 

 ,, ic. — The tip of an arm (enlarged) seen from in front. 

 id. — Sense organ as seen from above (greatly enlarged). 

 2. — Arms of a very young medusa in the Semostoman stage as seen from 

 below (much enlarged). 

 Figs. 3, 3«, 3e. — -Arms of a young medusa at a somewhat later stage of develop- 

 ment. 



Lettering. 



f.=terminal filament of arms: t.=short lateral filaments. 





