VEGA - EX PED IITONENSEV EICENSSK APLIGA ARBETEN. 131 
terminations is in the largest about 0,14 mm. "Pheir terminations 
are furnished with comparatively long spines. 
The minute anchorate spicules (Plate 24, fig. 17). These spi- 
cules are the smallest which I have seen; they are only 0,0075 
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 OÖ. Schmidt has overlooked them, and thus 
this species is identical with S. arciger O. 5. 
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 strange to find anchorate spicules in a spe- 
cies 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 Suberitidine O. S. 
And as O. Schmidt afterwards says with regard to the 
spicules of Suberites arciger O.S.: >»Es wärde nach dieser neuen 
Nadelform ebenso gut möglich sein, dass diese Spongie den 
Stammformen der Desmacidinen näher steht als den Suberiten>, 
ÅA. suberitoides Vosme&er may justly be considered as such a 
primordial species of the Desmacidinee. 
Colour. Yellow, when dried or preserved in spirit. 
Habitat. Spitzbergen, depth 40 fathoms; Kola Bay, depth 
25—100 fathoms. 
Genus Hymeraphia Bowerbank. 
Hymeraphia verticellata Bow. 
Lrå 
Hymeraphia verticellata, Bow., Mon. Brit. Spong., II, pag. 145, IIT, Plate 27, 
for 
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 spe- 
cimen 1s very minute, probably only a fragment of a larger one. 
