VEG A-BXPEDITIONENS VETENSKAPLIGA ARBETEN. 415 
The rosettes with obtuse branches (Plate 23, fig. 15—16). These 
rosettes differ in many ways from the above described ones. 
They are simple and radiating into all sides from the centre; 
they are not sharp-pointed, but they have at the-ends a bonnet- 
like inflation. This imflation is at the margin divided in four 
great spines. The rest of the spicules is microspined, excepting 
the bonnet-like inflation, which is smooth. These spicules 
are almost as numerous as the preceding ones and have also 
the same size, viz. 0,08 mm from the centre to the termination 
OMa LAY. 
ÄG 
Colour. Oream-white in the dried state or when preserved 
in spirit. 
Habitat. Baffin Bay, Lat. 75? 26' N., Long. 672 27 W., depth 
260 fathoms (542 S.). 
III. Halisarcine 0. 
Genus Halisarca Dujardin. 
? Halisarca Dujardinii Johnston 
Halisarca Dujardinir, Johnston, Brit. Spong. pag. 192, Plate 16 fig. 8, 1842. 
This species is represented by only one specimen from 
the expedition of the Vega. This specimen is large, forming a 
compressed cake-like mass, the greatest diameter being 73 mm, 
the smallest about 50 mm; the thickness varies much, not 
exceeding "10 mm." UPhe” surface: is smooth; the "eonsistency 
very fleshy. 
As the structure of the Halisarcine O. S. is so very uniform 
I, who have not seen any specimen of Halisarca Duj., am a 
little doubtful, whether I shall identify this species as Halisarca 
Dujardimi Johnston, or not. 
Habitat. Port Clarence, depth 4—6 fathoms (1049 V-.). 
