- Project Runeberg -  Vega-expeditionens vetenskapliga iakttagelser / Fjerde bandet /
431

(1882-87) [MARC] Author: Adolf Erik Nordenskiöld
Table of Contents / Innehåll | << Previous | Next >>
  Project Runeberg | Catalog | Recent Changes | Donate | Comments? |   

Full resolution (JPEG) - On this page / på denna sida - Sidor ...

scanned image

<< prev. page << föreg. sida <<     >> nästa sida >> next page >>


Below is the raw OCR text from the above scanned image. Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan. Ser du något fel? Korrekturläs sidan nu!

This page has never been proofread. / Denna sida har aldrig korrekturlästs.

terminations is in the largest about 0,4 mm. Their terminations
are furnished with comparatively long spines.

The minute cmchorate spicules (Plate 24, tig. 17). These
spicules are the smallest which I have seen; they are only 0,oo75
mm in length and require a careful examination to be
dis-covered.

Only by these spicules this species is to be distinguished
from Suberites arciger O. S. As they are exceedingly minute, it
is possible that O. Schmidt has overlookecl them, and thus
this species is identical with S. arciger O. S.

As I have not had type-specimens to compare with, I
cannot with certainty say whether they are identical or not.
I have not seen those peculiar, rounded spicules which are
figured by O. Schmidt.

It is rather stränge to find anchorate spicules in a
species so closely allied to Suberites Nardo; but both consistency,
acuate spicules and tricurvate-acerate spicules agree so well
with Suberites arciger O. S., that this species is likely to be a
true species of the Suberitidince O. S.

And as O. Schmidt afterwards says with regard to the
spicules of Suberites arciger O. S.: »Es wiirde nach dieser neuen
Nadelform ebenso gut möglich sein, dass diese Spongie den
Stammformen der Desmacidinen näher steht als den Suberiten»,
A. suberitoides Vo sm ser may justly be considered as such a
primordia! species of the Desmacidinse.

Colour. Yellow, when dried or preserved in spirit.

Habitat. Spitzbergen, depth 40 fathoms; Kola Bay, depth
95—100 fathoms.

Genus Hymeraphia Bowerbank.
Hymeraphia verticellata Bow.

Hymeraphia verticellata, Bow., Mon. Brit. Spong., II, pag. 145, III, Plate 27,

fig. 1-3.

This species, very remarkable by its spicules, is represented
by only one specimen, dredged up during the deep sea dredging
in the neigbourhood of North-cape in the year 1875. The
specimen is very minute, probably only a fragment of a larger one.

<< prev. page << föreg. sida <<     >> nästa sida >> next page >>


Project Runeberg, Tue Dec 12 13:09:24 2023 (aronsson) (download) << Previous Next >>
https://runeberg.org/vegaexp/4/0443.html

Valid HTML 4.0! All our files are DRM-free