6o 



ACTINIARIA 



Milne- Ed wardsia loveni Carlgr. 



PI. i. Figs. 32, 33. 



Milne-Edwardsia loveni n. sp., Carlgren 1892, p. 456, textfig. 3, 1893, p. 17, textfigs. 3, 4. PI. i, figs. 6 8, 



PI. 2, figs. 14, PI. 10, fig. 3. 

 Carlgr. Arndt 1912, p. 123. 



Diagnosis: No physa. Proximal part of the body of variable appearance, on account of the habits 

 of the animal. Scapus more or less polygonal, with a very strong, often rugous, easily deciduous cuticle. 

 Nematocysts of the scapus scattered, mainly arranged on the ridges, in the lower part about 24 // long, in 

 the upper 38 48 X 6 . Capitulum distinctly polygonal with sharp ridges. Nematocysts mainly on the 

 ridges 22 30 X 4 p. Nematocysts of the tentacles about 22 X 4 ;i. Number of the tentacles to about 30 

 40. Nematocysts of the actinopharynx partly 17 19 fjt, partly 24 29 X 3 ji. Longitudinal muscle-pen- 

 nons strong, in the upper part of the reproductive organs with about 20 30 folds. 



Colour: Mouth, actinopharynx and reproductive organs brick-red; tentacles and capitulum 

 flesh-coloured. Mesenteries and scapus inside the cuticle of the same colour as the tentacles, but paler, some- 

 times white. Cuticle of the scapus grey, shading off into brownish-yellow. 



Dimensions : Length of the body to about 3,5 cm, of which the capitulum is a fourth part. Largest 

 breadth to about 0,5 cm. Length of the tentacles about 0,35 cm. Actinopharynx one half or two thirds of 

 the length of the capitulum. 



Occurrence: Sweden. Bohuslan. Vaderoarne about 50 fms. in dead Lophohelia (Loven, Ols- 



son, Carlgren, Auriwillius and others). Kosterfjord. Sneholmen 60 

 120 fms. (Auriwillius) Ramso S. Koster 60 120 fms. (Auriwillius). 

 Norway. Drontheim fiord. Skarnsund 100 220 m in dead Lophohelia and Para- 

 gorgia (Oestergren, Mortensen 1911), Rodberg 150 200 m (Oester- 

 gren and Arwidsson) 100 fms. on "Duva rosea" 200 400 m (Arndt). 

 Mosterhavn 150 fms. on Lophohelia, Selsovig 100 fms. (G. O. Sars). 

 Fintnark. North Cape on a Brisinga 350 fms. 



Exterior aspect: The body is extended and more or less irregularly curved, because the animal 

 commonly lives in the dead calyces of Lophohelia. No physa is developed, the proximal end now broad, now 

 pointed. The scapus is invested with a firm, very thick, almost coriaceous, irregularly folded cuticle, not 

 equally wide, but here and there irregularly thickened, sometimes thicker than the capitulum, and in the 

 distal part sometimes with 8 pronounced longitudinal furrows (PI. i, fig. 33), corresponding to the insertions 

 of the mesenteries. These furrows are prolonged downwards, but becoming less distinct. The cuticle of the 

 scapus is easily deciduous, in the distal part often thinner than in the proximal part. The capitulum shows 

 8 high ridges, each placed midway between two insertions of the mesenteries. If the capitulum is strongly 

 contracted, the ridges appear like distinctly outlined, folded ribbons (Carlgren 1893, PI. i, fig. 8). The 

 most distal part of the capitulum is thinner than the other part of it. The tentacles are between 30 40 in 

 number, in younger specimens fewer, hexamerously arranged, in three or four cycles, short, cylindrical; 

 the inner tentacles a little longer than the outer ones. The oral disc is small, with radial furrows correspond- 



