44 
The spieules I found in my species are: 
1°. tr. ac. sp. (fig. 75, a and b) stout, a little curved; strongly 
spined. we 
2°. tr2. sp. (fig. 76) not frequent; the presence or absence cannot 
be a specifie distinetion; it can only have the value of a subspe- 
eific one (variety). 
3°. (tr?) ae. or tr. ae. (fie. 79.) 
4°. tr??. sp. f. (fig. 77 and 78.) They vary 1°.in length, 2°. in 
the distinctness of the spined heads and 3°. in diameter: specimens 
as in fig. 77 are strongly fusiform, while others as in fig. 78 
can hardly be named fusiform. 
5°, rut. ruft. and anc. anc. (fig. 81). The ordinary anchorates 
and the palmato-anchorates as those in fig. 81 a, b, are the most 
common ones. Between these gigantic specimens occur from time 
to time from which I give an illustration in fig. 80, and small 
ones as in fig. Sle. 
6°. «D NB. (fig. 82). The minute so called bipocillate spieules 
are very abundant; they are probably a modification of the S shaped 
spicules or bihamates, that occur in most Desmacidine-Sponges. 
24. Esperia Ilanx '!) n. sp. [Pl. II, figg. 89—95]. 
Diagn. Corpus lanciforme. Spieula indicantia: tr. ac. | A sp. | 2 | 
rut. rut. | anc. anc.? | 
Local. Barents-Sea [lat. 72° 32' 3 N.; long. 36° 39' 5 E.] (July 
15, 1879). 
Depth. 128 Fathoms. 
Special description. 
I have not given an illustration of this Sponge because it is not 
complete. However it appears to have had a dish-like flattened 
shape, the base having a. smaller diameter than the margin. The 
surface is a little hispid. 
The Sponge possesses several kinds of spieules. They are: 
1°. tr. ac. (figg. 90 and 91) showing slender and stout ones, often 
with an indication of head or fusiform shaft. 
1) lanx — kind of flat dish, on which food was served, 
