46 



ACTINIARIA 



thirty folds of ordinary height. These folds are rather richly branched, especially in the outer and in the 

 innermost parts. The inner folds are commonly considerablj' shorter than the outer ones, and the outer part of 

 the mesenteries attached close by the outside of the pennons. The parietal muscles (textfig. 43 — 45) are strong; 

 in transverse-sections in the reproductive region and a little higher up more or less trianguloid and rather 

 richly branched. The inner part of the parietal muscles displays short, somewhat thick folds. In the textfigs. 



Fig. 40. 



Fig. 41. 



Fig. 42. 



Textfigs. 40—45. 

 Edwardsia andresi. Transverse 

 sections of pennons (figs. 40-42) 

 and parietal muscles (figs. 43- 

 45) in the upper part of the re- 

 productive tract or a little above 

 (fig. 41). Figs. 40, 43 spec, from 

 Bredefiord. Figs. 41 type-speci- 

 men. Fig. 44 spec, from Lyn- 

 gen. Figs. 42, 45 specimen from 

 Iceland (younger than the 

 others). 



I'ig- 43- 



Fig- 44- 



Fig. 45- 



43 — 45 I have reproduced the parietal muscles of three specimens from different localities. These figures 

 plainly show the conformity of the three specimens, as do also the figures of the corresponding longitudinal 

 pennons (textfigs. 40 — 42). The expansion of the parietal muscles on the column is rather inconsiderable. 

 The ciliated and the intermediate streaks are well-developed, in the proximal part of the filaments there is 

 a distinct boundary streak. Danielssen states that acontia are present, but that is certainly not so. The 

 species is dioecous. 



Remarks. The description of the species given by Danielssen differs in several respects from mine. 



