ACTINIARIA 



57 



nemathybomes 50 60 X 4 5 p, in the tentacles 31 36 X 3 p, in the actinopharynx 41 46 X 3 4 p. 

 Tentacles 16. Longitudinal muscle-pennons of the mesenteries in the reproductive region strong, with about 

 30, often ramificated folds. Outer parts of the mesenteries issuing not far from the middle of the pennon, 

 Parietal muscles in the reproductive region in transverse-sections oval, with rather richly ramificated folds. 

 Their expansion on the column is inconsiderable. 



Colour in preserved state: scapus dirtily ochreous-yellow shading off into grey. 



Fig. 70. 



Fig. 71. 



Textfigs. 68 72. Isoedwardsia ingolfi. 



Fig. 68 : Section of a portion of scapus in its proximal part. Fig. 69 : Section of a 

 portion of scapus in the middle of the aboral body-end. Fig. 70: Transverse sec- 

 tion of a pennon in the reproductive region. Fig. 71 : Transverse section of a pa- 

 rietal muscle in the reproductive region. Fig. 72: Transverse section of a mesen- 

 tery in the proximal part. 



Dimensions: Spec, i) Length i.i cm., largest breadth, a little above the proximal part of the animal, 

 0.5 cm. Length of capitulum 0.5 cm. Sp. 2) Length 2.1 cm, largest breadth 0.6 cm (PI. I. fig. 36). 



Occurrence: 6o37' N. 27 52' W. 799 fms. Temperature of the bottom 4.5 (Ingolf-Exp. St. 78) 2 sp. 



Exterior aspect: No physa. The most proximal part of the column is rounded, broader than the 

 other part of the body and totally cuticle-clad (PI. i, fig. 36). Scattered nemathybomes appear also in the most 

 proximal end which is more solid than the other part of the body. The proximal end imperceptibly fuses 

 into the other part of the scapus, the cuticle of which is also strong. In all places on the scapus there are 

 scattered nemathybomes which are especially distinct in the smaller, more extended specimen. The longitu- 



The Ingolf-Expedilion. V. 9. 



