408 FRISTEDT, SPONG ES. 
length, either straight or a little curved at one point. The 
diameter of these minute spicules is comparatively great. 
Colour. Grey-white, when preserved in spirit. 
Habitat. East-coast of Greenland, Lat. 65? 40, Long. 35? 32 W., 
depth 25—40 fathoms (578 5.) 
Genus Leucandra H. 
Leucandra cylindrica n. sp. 
Plate 22; fig. 14—22" Plate 26, fig. 3. 
This > species is. represented in the collection of aretice 
sponges in the Zoological State Museum at Stockholm only 
by solitary forms from Pitlekai. There is much resem- 
blance between our specimens of the above-mentioned species 
and Heckel's deseription of Leucandra ananas Mont. (HH). 7") 
The spicules of L. cylindrica agree with those of L. ananas, 
the quadriradiate of the inner surface excepted. In LL. cylin- 
drica these spicules have a much larger apical ray than in 
L. ananas. And, besides that, our new species has a kind of 
minute acerate spicules, inflated near one point and slightly 
spined along the same point, which spicules are not to be 
found in L. anamas. 
'The sponge forms a cylindrical arcuated or straight tube, 
attached to branches of sea-weed. The base is round and 
usually bent round the branche. Most specimens are furnished 
with a short ciliary tube of long, slender, acerate spicules. The 
outer surface is slightly roughned in examples from stat. 1015, 
smooth in the rest. The central cylindrieal cloaca is nearly 
as long as the sponge and armed with the apical ray of the 
quadriradiate spicules. The length of the greatest specimen 
is 40 mm. 
Skeleton. 'The skeleton consists of gastric quadri- 
radiate spicules with long apical ray, of parenchymal quadri- 
radiate spicules with shorter apical ray, of large dermal 
acerate, of very slender acerate spicules from the peristome, 
of very minute acerate spicules from the gastric layer, and 
of triradiate spicules. 
ylle ekel, op. eft. II) pag. 200, TIL Paf: 32 Kro, 5 ar om Par A0 FIS 
