Plate 13
Fig. 48, Dictyocircus clathratus JØRG. n. sp. Henningsvær, 20/3 1899. a 500/1, b-e 400/1. As regards the signification of the letters, cfr. above p. 125 and p. 130.
a. Dorsal view.
b. Dorsal-lateral view.
c. Sagittal view. Only the meshes f, the spines g and the right side of the spines k and meshes c are illustrated.
d. Lateral view.
e. Ventral view.
Fig. 49. Ceratospyris hyperborea JØRG. n. sp., 450/1. The Vest Fiord, 1/2 1899, 0-200 m.
Fig. 50. Plectacantha oikiskos JØRG. n. sp., 450/1. Ofoten II, 7/2 1899, 0-100 m. Apical view. Diameter of the network about 65 µ.
Fig. 51. Plectacantha oikiskos JØRG., var.; 450/1. Sea off Røst, 22/3 1899, 0-900 m. Very strong spines and arches.
a. Ventral view; the primary ventral arch and the primary ventral mesh in front.
b. The same specimen, apical view. Length of spine D 55 µ; greatest breadth of the beams 6 µ; largest mesh (the secondary mesh to the right of spine D) 22 x 15 µ.
c. The same, lateral view; the left lateral arch and the left lateral mesh in front.
d. The same, lateral view; the right lateral arch and the right lateral mesh in front.
e. The same as the foregoing, but turned 90 upwards. The mesh beyond (and below) the right lateral mesh in front.
Fig. 52. Plectacantha oikiskos JØRG., 380/1. The Vest Fiord I, 13/1 1899, 0-180 m. Young specimen. Antapical view.
Fig. 53. Plectacantha oikiskos JØRG., 400/1. Henningsvær, 20/3 1899, 0-280 m. Lateral view; the right lateral arch and mesh in front.
Fig. 54. The same, 450/1. Dorsal view.
Fig. 55. Plectacantha oikiskos JØRG., 380/1. Helligvær, 12/1 1899, 0-250 m.
a. Lateral view; the right lateral arch in front.
b. The same, turned a little upwards and to the left.
c. Lateral view; the right lateral main spine in front. The unclosed network is seen.
d. Lateral view; the meshes under the right lateral spine in front.
e. Antapical view.
Fig. 56. Plectacantha oikiskos JØRG., 450/1.
a. Somewhat oblique antipical view. The Vest Fiord II, 0-200 m., 13/1 1899. Diameter of the network about 50 µ.
b. Oblique antapical view. Sea off Aalesund, 61° 56' n., 2° 40' e., 10/2 1893, 0 m. (S/S Michael Sars). Diameter of the network about 60 µ.
Fig. 57. Plectacantha oikiskos JØRG., 380/1. A well developed specimen from Henningsvær, 20/3 1899, 0-280 m.
a. Ventral view; the ventral arch and the network above, in front.
b. The same, apical view.
Fig. 58. Plectacantha trichoides JØRG. n. sp., 450/1. Ventral-lateral view; the right lateral spine in front. Sea north of Shetland, 63° 36' n., 0° 32' e., 11/2 1903 (S/S Michael Sars). |
