52 



ACTINIARIA 



teries is attached close by the' outside of the pennon. The parietal muscles are very strong, in the inner part 

 commonly more branched than in the outer one, where the high folds sometimes have no branches at all. 

 The folds are numerous and, especially towards the outside, closely packed together. According to the state 

 of contraction the parietal muscles of transverse-sections are of a different appearance; they are, however, 



Fig- 57- 



Fig- 58- 



Fig. 59- 



Fig. 60. 



Fig. 61. 



Textfig.s. 57 — 61. Edwardsia vitrea. Transverse section of parietal muscles. Fig. 57: young specimen from Wijde Bay, 

 fig. 58 specimen from Franz Joseph Fiord, fig. 59 specimen from Great Island, fig. 60 specimen from Great Fiord, 



fig. 61 type-specimen. 



more or less trianguloid. For comparing purposes I have reproduced the parietal muscles of five specimens. 

 Especially the muscles reproduced in the figs. 58, 60, and sectioned in the upper part of the reproductive region, 

 do very well agree. The distribution of the parietal muscles on the column is the ordinary one. The ciliated 

 tracts are of usual appearance. The type-specimen as well as the other examined specimens were females. 

 I cannot confirm Danielssen's statement that the species is monoecious. Also in other respects Daniels- 

 sen's description is erroneous. 



