ACTINIARIA 



51 



of 17—29 X 2.5—3.5 n, I have also observed smaller capsules. The ectoderm of the actinopharynx is high, 

 several times thicker than the mesogloea, and contains nematocysts of two different sizes. 



The longitudinal muscle pennons of the mesenteries are strong. Unfortunately I cannot describe the 

 pennons of the type specimen in the upper part of the reproductive tract as Danielssen has sectioned this 



Fig- 52- 



Fig- 53- 



Fig- 55- 



Fig. 56. 



Fig. 54- 



Textfigs. 52 — 56. 



Edwardsia vitrea. 

 Transverse section of pennons in the upper 

 part of the reproductive tract (figs. 53, 54) 

 or in a corresponding part (fig. 52). Fig. 52 

 joung specimen from Wijde Bay, fig. 53 spe- 

 cimen from Franz Joseph Fiord, fig. 54 spe- 

 cimen from Great fiord. Figs. 55, 56 Trans- 

 verse section of a mesentery of the type- 

 specimen, fig. 55 through the lower part 

 of theactinopharyngial region, fig. 56 through 

 the lowest part of the reproductive tract. 



part; on the other hand I have been able to examine the pennons of the lowermost part of the actinopharynx 

 region (textf. 55) and of the lowest part of the reproductive tract (textfig. 56). In the latter figure we see 

 that the pennon begins to diminish, showing however numerous branched folds, especially at the outer side. 

 In the former sections we find about 30 high, rather richly ramificated folds, of about equal height. I have 

 reproduced pennons in the upper part of the reproductive region of the specimens from Great fiord (textfig. 

 54), from Greenland (textfig. 53) and from Wijde bay (textfig. 52); they aU agree well. The folds are about 



25 30 in number and provided with numerous, small, secondary folds. The outer lamellar part of the mesen- 



7* 



