Plate 11
Fig. 42. Phorticium pylonium (HCK.?) CL., 450/1. The Tys Fiord, 28/3 1899, 0-700 m.
e. The same specimen as fig. 42 a-d (pl. X); lateral view.
f. Same specimen, same view, optical section (= sagittal one). The outer sagittal girdle is seen from the side, and two similar inner ones.
Fig. 43. Phorticium pylonium (HCK.?) CL., forma (?); 450/1. From the same locality. In a certain position of the shell, this spiral is seen.
Fig. 44. Phorticium pylonium (HCK.?) CL., forma (?); 450/1. Octopyle octostyle f. minor Jørg. Sea off Røst, 22/3 1899, 0-900 m. Apical view.
Fig. 45. Phorticium pylonium (HCK.?) CL., forma (?); 450/1. Octopyle octostyle f. minor JØRG. From the same locality.
a. Dorsal view.
b, d. The same specimen; lateral view. The right and left sides correspond to the lower and upper ends of fig. a.
c. Same specimen; apical view.
Fig. 46. Streblacantha circumtexta (JØRG.), 450/1. The Tys Fiord, 28/3 1899, 0-700 m.
a. There are more byspines than illustrated in the figure. Most of them are only seen with difficulty, except near the outlines.
b. Same specimen, same view, optical section.
c. Young specimen with 9 main spines.
d. The same in optical section.
f. The pores on a portion of the outer shell, of an older specimen.
e. Same specimen, showing a piercing main spine with the fine connecting beams between the byspines. Side view. |
