THE CLAVIFORM POLYPES. 2,9 



The movement of these animals was altogether similar 

 to that of the detached bell-shaped Coryne, that is, they 

 propelled themselves backwards by a rhythmical pumping 

 in and out of the water, whilst the long filaments hung 

 behind them, waving about in all directions. Since these 

 individuals allowed the course of the organs to be more 

 easily perceived, I will here also remark, that at each of 

 the four angles of the bell a very delicate vessel ran down 

 very nearly to the extreme edge, beyond which I was 

 unable to follow it. The four external angles were of a 

 milk-white colour, and formed in a peculiar way. In 

 each of the larger cells, of which the white lines or edges 

 of each angle were constituted, was situate a very minute 

 globular cell, which lay half in and half out of the mem- 

 brane, (stinging organs ?) (fig. 46 ;) I discovered a similar 

 structure in a white line which passed down from the 

 lower edge of the bell, and formed a ring, connecting the 

 other four lines together. The triangular ocelli resembled 

 those of the Coryne, but were larger. At some distance 

 from the longer edge, but otherwise perfectly parallel to 

 it, two slightly zigzag lines (canals d) proceeded down- 

 wards to the peculiarly formed, lobed organ. 



An organ developed in such a peculiar and striking 

 manner, must necessarily have a definite and essential 

 object, and since it is developed at so late a period, and 

 is as it seems filled with globules or cells, I can only look 

 upon it as connected with generation. 



What I am convinced of with respect to this mode of 

 generation, namely, that, at least in this species of Co- 

 ryne, the bell-shaped individuals detach themselves from 

 the club-shaped polype and swim about towards the 

 surface of the water in the form of small Medus(B, is no 

 more than what R. Wagner, Sars, and Loven have con- 

 jectm'ed, with regard to the form and rhythmical motion 

 of the bell-shaped bodies of other species of the family ; 

 and if my memory does not deceive me, Sars, either by 

 letter or orally, also communicated to me, that he last 

 year observed the detachment of the campanulate bodies. 



