550 CAMPYLONEMIDA. 



Fig. 33. 



Valkeria uva. 



ii. Campylonem IDA; Hincks. 



Tentacles not forming a perfect circle, two of the number 

 being always everted. 



Throughout this group the polypide is of the simplest 

 structure and of very delicate habit^ and in all cases it 

 exhibits the curious arrangement of the tentacles which 

 has suggested the name. Two of the number are uni- 

 versally bent outwards towards the side, so that the 

 tentacular wreath does not form a perfect circle ; the 

 remaining six stand erect, in the usual way. I believe 

 that the two everted tentacles are always placed on the 

 same side as the anal opening. The number of tentacles 

 is constantly eight ; a gizzard is always wanting. 



The remarkable modification of the tentacular wreath 

 must be regarded as an important character, and as afford- 

 ing a very sure indication of natural affinity. 



