2Uö K. KISHINOUYE, 



This medusa attains very large size. In a full-grown specimen, 

 the diameter of the umbrella is more than 450 mm. 



It is found in the Inland Sea, Bay of Suruga, the Ariake Bay, 

 etc. It is known by the names ofBizenkurage, Tökuragß etc. 

 From the narrative of friends of mine, I am inclined to believe that 

 a kind of medusa called D ö k w a n k u r a g e in the Japan Sea is 

 identical with this species, though I have not yet seen any specimen 

 of that kind. 



I have specimens of this medusa also from China. 



This medusa closely resembles the medusa described by Haeckel 

 as Rhopilema rhopalophora ^) ; but it may easily be distinguished by 

 the form of the appendage of the oral arm. In the former, the 

 appendage is long and fusiform, while in the latter it is triangulär 

 and pyramidal. 



Though the terminal and lateral appendages of the oral arm ave 

 morphologically equal in value as Vanhoeffen ^) Claims, yet I think 

 it proper to distinguish, as Haeckel did, the medusae with distinct 

 terminal appendages from those which lack them. In the latter 

 group of medusae, there is no marked ditference between the terminal 

 and lateral appendages, neither in shape nor in size. Therefore I do 

 not agree with Vanhoeffen who thinks it right to withdraw the genus 

 Rhopilema of Haeckel. 



Rhopilema verrucosa n, sp. 



I found a few specimens of a medusa, dififering from the common 

 edible species, among the medusae preserved for food and exhibited 

 at the Second National Fisheries Exhibition at Köbe, 1897. They 

 were tolerably well preserved, so I was able to examine essential 

 points of structure. 



The umbrella seems to be pretty high; but from the preserved 

 specimens it was rather difficult to recognize the shape in the fresh State. 

 In each octant of the umbrella margiu, there are 6—8 oblong velar 



lobes between two 



small, lanceolate, 



ocular lobes, as is 



shown in the ac- 



companying figure. 



1) Haeckel, System der Medusen, Acraspeden, p. 596. 

 [_ 2) Vanhoeffen, 1. c. 



