74 



ACTINIARIA 



as those in the endoderm of the cohimn here and there occur. Tlie parietal muscles' are in the reproduc- 

 tive region strong with numerous folds and on transverse-sections of a rounded appearance (textfig. 92), 



in the capitular tract considerably weaker 

 and arranged more or less in the shape of 

 a fan (textfig. 90, 91). The part of the 

 parietal muscles which expands on the co- 

 lumn is considerable and as broad as the 

 parietal muscle-pennon itself. 

 The mesenterial jSlaments 

 have a typical appearance. 

 The animal is dioecious. 



Biology : The animal 

 lives unattached, mainly on 

 sand (Appellof) or on sto- 

 nes, or attached to shells? 

 {Lecythia according to Sars). 

 Remarks : Whether 

 Sars's Lecythia brevicornis is 

 identical with Appellof's 

 Edwardsia carnea is very dif- 

 ficult to decide ; on the other 

 hand the species described by 

 Appellof is the same species 

 as Edwardsia Sarsii Diib. & 

 Koren, which I have been able 

 to substantiate on specimens 

 belonging to the Museum of 

 Christiania and labelled "Ed- 

 wardsia sarsii Diib. & Koren, 

 Bergen, Manger, Sars". As 

 to Lecythia it is possible that 

 Sars's description alludes to 

 the species later on described 

 by Gosse as Edwardsia car- 

 nea ; in reality S ars's figure and description of this species and its occurrence on Saxicava more recall Edwardsia 

 carnea Gosse than Paraedwardsia carnea (Diib. & Koren). As it is, however, hardly possible to decide these 



1 Appellof (1891, p. 21) states that the parieto-basilar muscles are absent in E. carnea. This is certainly not the 

 ca.se as the part of the parietal muscles ou the opposite side of the pennons corresponds to the parieto-basilar muscle (com- 

 pare Carlgren iyo5, p. 5i7_5i8). 



Textfig. 88 — 92. Paraedwardsia sarsii. Fig. 88: Transverse section of pennon in the 

 reproductive tract. Fig. 89: Transverse section of a mesentery in the uppermost part 

 of the cnido-glandular tract (in the capitular region). Fig. 90 — 92: Transverse section 

 of parietal muscles in the capitular region (figs. 90, 91) and in the reproductive tract 



(fig. 92). 



