444 PRISTEDT, SPONCGCES: 
The hastate (obtuse) spicules (Plate 25, fig. 9). The spicules 
of this kind are very few in number and totally smooth. Their 
length is 0,2 mm; the ends are obtuse or hastate. 
The equianchorate spicules (Plate 25, fig. 10). These spicules 
are numerous both in the dermal membrane and in the inter- 
stitial membranes. Their length is 0,035 mm. 
The bihamate spicules (Plate 25, fig. 11, 12) are both C- amd: 
curved; they are very slender. The length between the points 
is about 0,02 mm. 
Colour. From light to light-grey, when preserved in spirit. 
Habitat. East-coast of Greenland, depth 130 fathoms (580 S.). 
Hastatus indistinctus n. sp. 
Plate 25, fig. 13—19. 
This sponge is massive, elongated, the length 45 mm, the 
thickness 20 mm, and the breadth 15 mm. It is attached tomma 
Balanus. The surface is smooth and even. I have seen neither 
oscula nor pores. The dermal membrane is well preseryed, 
thin and spiculous. "The consistency 1s fragile. 
Skeleton. The skeleton consists of spined or smooth 
acuate spicules, of hastate or obtuse, equianchorate and of bi- 
hamate spicules, the last-mentioned of two kinds. 
The (spined) acuate spicules (Plate 25, fig. 13) are most often 
spined, the spines being exceedingly few in number. Sometimes 
the spicules of this kind are totally smooth. They are straight 
Or: slightly, curyed. = Ihe fenech 055 nam; 
The hastate (obtuse) spicules (Plate 25, fig. 14) are totally smooth; 
the ends are generally sharp-pointed, rarely, as in the figure, 
obtuse. They are often curved, the length being 0,2 mm. 
The equianchorate spicules (Plate 25, fig. 15, 16). These spi 
cules are very numerous; their length is 0,025 mm. 
The great bihamate spicules (Plate 25, fig. 17, 18) are C- and 
S-curved, the straight length between the points being 0,05 mm. 
