440 FRISTEDT, SPONG BS. 
Skeleton. "The skeleton consists of spicules of two 
kinds, viz.: spinulate spicules and minute C- and S-formed 
(bihamate) spicules. 
The spinulate spicules (Plate 24, fig. 32, 33). The size of 
these spicules varies considerably. They are all furnished with 
a well developed head, abruptly sharp-pointed in the other 
termination; they are usually straight, rarely slightly curved. 
The length varies from 0,25 to 0,5 mm. The largest spicules 
are the most numerous. 
The minute bihamate spicules (Plate 24, fig. 34, 35). These 
spieules, both C- and S-formed, are numerous. The straight 
length between the points is about 0,025 mm. 
Colour. "This species is of a very fine rose-colour, when 
dried or preserved in spirit. 
Habitat. East-coast of Greenland, depth 125 fathoms (579 5). 
Desmacella porosa n. sp. 
Plate; 24 figsra0: Dux Elater 28 Hen 
Öne large specimen .represents this. new species mellae 
sponge is thickly incrusting, forming an irregular knoll, the 
greatest diameter 90 mm, the smallest 60 mm. The dermal 
membrane is thin, pellucid, perforated by several holes giving 
it the appearance of a net. Only a small part of the dermat 
membrane is present. The other part of the surface 1iskeven: 
slightly /'rough. 
Oscula are numerous, dispersed. 
The sponge is perforated by several, tolerably large chan- 
nels, resembling Fuspongia Bronn. The skeleton spicules form 
a net-work like the species of Remiera Ndo. 
Skeleton. "The skeleton consits of acerate spicules and 
of bihamate spicules. 
The acerate spwcules (Plate 24, fig. 36). These spicules agree 
well with those of several species of Remera; they are slightly 
curved or straight, tapering from the middle towards the sharp 
points. The length is constant, 0,35 mm. 
