| VEGA-EXPEDITIONENS VETUNSKAPLIGA ARBETEN. 445 
The small bihamate spicules (Plate 25, fig. 19) are more 
numerous than the preceding. They are very minute; the 
straight length between the points is only 0,0065 mm. 
Colour. Yellowish brown, when dried. 
Habitat. Spitzbergen, Lat. 80” T N., Long. 16? 54 E., depth 
60 fathoms (256 Sp.). 
Genus Myzxilla 0. S. 
Myxilla septentrionalis n. sp. 
Plate 24, fig. 4. 
This sponge is coating, thin, the greatest thickness not 
exceeding 3 mm. Öur single specimen is 80 mm long, its 
oreatest breadth 20 mm. The surface is even and smooth, 
gelatinoid. Oscula and pores are not visible. The outer part 
of the sponge is like that of a fleshy Suberites Nardo, but the 
consistency is much softer in this new species. 
The skeleton consists of obtuse spicules. 
The obtuse spicules (Plate 24, fig. 4) are congregated in 
fasceicules and tolerably numerous; they are generally straight. 
One termination is a little thicker than the other, sometimes 
slightly spinulated, the length 0,3 mm. 
Colour. "The colour is yellowish-grey, when preserved in 
Spirit. 
Habitat. Konyam Bay, depth 2—16 fathoms (1058 V-.). 
Genus Cornulum Carter. 
Cornulum ascidioides n. sp. 
Blater25 necl re kPlater20ns 2 
The outer form and shape sufficiently indicate a species 
of the genus Cornulum Carter. Four specimens represent the 
