. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 205 Dimensions: Spec, i) diameter of the body a little above the pedal disc 4 cm, height 3 cm. Inner tentacles about i cm long and broad. The specimen 2 was smaller, but more strongly contracted. Occurrence: 64°53' N. io°o' E. 630 m. Temp, at 600 m. â0,69 (Michael Sars-Exp. 1900 St. 10) I sp. (Sp. I). Norway-Bear Isl. 73°27' N. 23°ii' E. 460 m. Black, gray clay. Temp, at the bottom 2,67 ( 1898) i sp. (Sp. 2). Exterior aspect: The pedal disc was wide, in
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. ACTINIARIA 205 Dimensions: Spec, i) diameter of the body a little above the pedal disc 4 cm, height 3 cm. Inner tentacles about i cm long and broad. The specimen 2 was smaller, but more strongly contracted. Occurrence: 64°53' N. io°o' E. 630 m. Temp, at 600 m. â0,69 (Michael Sars-Exp. 1900 St. 10) I sp. (Sp. I). Norway-Bear Isl. 73°27' N. 23°ii' E. 460 m. Black, gray clay. Temp, at the bottom 2,67 ( 1898) i sp. (Sp. 2). Exterior aspect: The pedal disc was wide, in specimen i for the greater part torn off, so that only the outer part was left. The body of specimen i was in contracted state conical, of specimen 2 more cylindrical, the distal part of the body of spec. 2 bending outwards and downwards. The ectoderm of the column was lost, the thick mesogloea shows irregular, longitudinal, indistinct furrows. The margin is tentaculate. The tentacles, partly cover- ed by the column, are conical, about as long as broad, and irregularly, transversally wrinkled. The inner are considerably larger than the outer and show no basal thickenings at the outside. The number of tentacles was in specimen i about 90, probably 92, in specimen 2 104. The tentacles are very close and some- times almost fusing together at the base, especially in spec, i), so that the outlines between them are indistinct; in such cases the mesenteries reach into the tentacles, as textfigure 195 shows. The oral disc is rather wide and ra- dially sulcated. The actinopharynx is well developed, with the deep siphono- glyphes being devoid of gonidial tu- bercles, but aborally prolongated. The ^'^- "^^ ^^^- '^^ . . Textfi^s. 195â197. Pycnantkus densus. actmophar\-nx is besides longitudinally â " , ,,.,-> ^ o ^ Fig. 195: Transverse section of the basis of two tentacles (T). me: mesentery, sulcated, in specimen 2 there are about Figs. 196â107: Transverse section
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
