39 
17. Cribrochalina Sluiteri n. sp. |Pl. I, fig. 18; pl. III, 
figg. 71—74.] 
Diagn. Corpus flabelliforme; basis per caule breviore lapidibus hae- 
rens. Spicula indicantia:: tr. ac. (duo vel tria genera) | tr”. ac. | 
Local. Lat. 72° 5’N.; long. 37° 57' E. (Barents-Sea) Juli 25, 1878. 
Depth. 140 Fathoms. 
Special description. 
This Sponge, dredged by Dr. Sluiter, after whom I have named 
it, represents one of the totaly fan-shaped specimens of Oribrocha- 
lina. As there is but one specimen I do not know if it also 
oceurs in the funnelshaped state. The stem is short; but, being 
broken off, it is possible though not probable that a part of it may 
have been lost. 
The body is of a greyish colour, is smooth to the touch and 
shows, as is to be seen in figure 18 (Pl. I), many undulations. 
The skeleton is formed by acuate spicules, held together by 
keratode-fibre. The spicules themselves are: 
1°. tr. ac. (figg. 71—73, pl. III). They are of different shape. 
In some there is a constrietion beneath the top in order to form 
a sub-pinlike shape, in others this constrietion is so insignificant 
that it is hardly conspieuous. Sometimes they are subfusiform. 
From the type tr. ac. we see transitions to (tr°.) ac., (tr°.) ac. f. 
etc. They also vary very much in diameter. Compare figg. TI, 
72 and 73. 
2°, tr°. ac. (fig. 74, pl. III) smaller than the preceding ordinary 
ones; they are rather rare. 
18. Chalinula spec. (robustior O. 8.?) [Pl. I, fig. 23; 
pl» II, 682113]. 
Diagn. Corpus arborescens; spicula indicantia: ac'. 
Local. Barents-Sea (lat. 71° 6’ N.; long. 50° 20' E.) 
Depth. 62 Fathoms. 
Literature. 
1870. Schmidt, Spong. Atlant. Geb. pag. 38. 
