j^Q ACTINIARIA 



dinal stripes, terminating in a white spot below the tentacles, or with rows of spots instead of stripes. Ten- 

 tacles more or less transparent, white or yellowish with 3 to 5 (6) transversal reddish-brown bands, the first 

 band next to the oral disc M-shaped, the second V-shaped. Directive tentacles sometimes opaque white. 

 Oral disc commonly yellowish with radial brownish-red stripes at the insertions of the mesenteries, around 

 the mouth a brownish-red annulus, between the stripes i — 3 triangular spots. Sometimes the oral disc is 

 opaque white without spots (Carlgren, 1893). 



Dimensions: In contracted state unto 4 cm long. 



Occurrence: The Baltic Sea. 6' S. to W. off Karlskrona (Kolmodin, 1882), E. oft' Simbrishamn 

 45 fms. (Gunhild-Exp., 1878), 25° E.N.E. off Hammeren (Hammerodde) 40 fms. clay 

 (Kolmodin, 1882), N.N.E. off Gudhjem 38—40 fms. (Kolmodin, 1882), 7' E. to S. 

 off Svaneke 38 fms. (Kolmodin, 1882), oft' Svaneke 47 fms. (Mortensen, 1895), 

 7' W.N.W. off Ronne 25 fms. (Kolmodin, 1882), 55°9' N. i3°49' E. 25 fms., 55°/ N. 

 I3°3i' E. 25 fms., 54°57' N. I3°42' E. 25 fms. (Oberg, 1871), Kiel 7—10, 5 fms. 

 (Meyer, Mobius, Schulze, Michaelsen). Hoh-wachterbucht 8,5 fms., W. off 

 ^ro (Winther). The Sound (Moller, Ltitken, Hering, "Sven Nilsson" St. 27, 

 29, 30, 38, 41, 42, 46) KuUen (I^oven), Hellebaek (lyiitken, Mortensen). 

 The Great Belt (Winther) W. off Refsnses 48 m (Mortensen, 1912), Konigshaff 

 Alsen (Ahlborn), The Dittle Belt 7—24 fms. (Schiodte). 

 Samso Belt (Winther). 



Cattegat (Petersen and others), Hirtsholm (Mortensen, 1897), S. off Morup reef 

 (Gunhild-Exp., 1878), Marstrand fiord 15 fms. (1864), GuUmar fiord, Strommarne, 

 Skatholmen (Carlgren, 1895), between Grasholmen and Gullholmen, N. Gaso fiord 

 (Wiren, Carlgren), Bohuslan (I,oven), Vaderoarne (Arwidsson, 1895). 

 Skagerrak, 4'/,, leagues S.W. '/i W. off Skagen lightship 60 fms. (Danish biological 

 station 1904). 



Norway. Bergen (teste Sars), Drontheim fiord, Rodberg 5 — 10 fms. I-,ofoten Ure 

 20 fms. (teste Sars), 'Vadso 20 — 30 fms. (teste Danielssen). 

 As I have before (1893) described the exterior appearance and the anatomy of this species I have 

 not much to add now. The structure of the "i/fl/cam/)fl-papillae" has been discussed above. Concerning 

 the relation of this species to Halcampa ardica compare the remarks to the latter species. 



Halcampa arctica Carlgr. 



PI. I. Figs. 3,4. — PI. 2. Figs. 14, 15. — PI. 4. Fig. 5. 



Halcampa arctica n. sp., Carlgren, 1893, p. 45, PI. i, figs. 1,2. PI. 5, figs. 6 — 12. 



Diagnosis: Physa ampullaceous, retractile, provided with a central aperture surrounded by two 

 cycles of apertures. Nematocysts of the scapus 12 — 14 x 1,5 fi, those of the capitulum 12 — 16 x i — 1,5 /<; 

 those of the tentacles 12—17 X 1,5 ^. Spirocysts of the capitulum 19—32 X 2—2,5 fi, those of the tentacles 

 (13)19 X I — 36 (41) X 2,5- — 3/i. Tentacles 12. Nematocysts of the actinopharj^nx 24 — 41 x 3,5 — 5 ft of the 



