12 



Myxilla grisea, n. sp. 



En flad, grenet, lysegraa Svamp (Tab. VI. Fig. 9), 

 der foruden anc 2 3 Spilder kun har glatte Spikier, dels 

 tvinle fr' 2 , dels tykke, tr' 2 og trac Spikier. De to sidst- 

 nævnte Fonner er lidt krummede (Tab. I, Fig. 3). 



Findested. 



Station 84. 



Myxilla brunnea, n. sp. 



En stor, bladdannet Svamp af brun Farve (Tab. VI, 

 Fig. 5), der har en hul Overilade. Den har ingen taste 

 Fibre (keratode Fibre). Saavidt det kunde iagttages, be- 

 stod dens Spilder af ac' 2 sp. og tr 2 sp. svagt krummede, 

 desuden ane- 3 (Tab. III, Fig. 1 A). 



Findested. 



Station 275. 



Myxilla flabelliformis, n. sp. 



Ogsaa et stort, vifteformigt Blad, men af graa Farve 

 (Tal). VI, Fig. 6). Heller ikke det har nogen faste 

 (keratode) Fibre. Dets Spikler ere ac 2 og ane 2 3 (Tab. 

 II. Fig. 14). 



Findested. 



Station 359. 



Jeg har betegnet de to følgende Svampe Sclerilla, og 

 ved at gjøre dette lagt Vægt paa Spiklerne alene uden at 

 skjænke Schmidts Sarkode-Membran og Fibre nogen Op- 

 mærksomhed. 



Sclerilla arctica, n. sp. 



En graafarvet, flad Kage med runde Kanter, noget 

 afiang og forsynet i den ene Ende med en fragmentær 

 Overflade, der kunde synes at vise, at den har siddet paa 

 en tynd Stilk (Tab. VI, Fig. 15). Den bestaar af Bundter 

 af ac' 2 Spikler, og imellem disse Bundter tinder man en 

 farveløs Sarkode, hvori man opdager ane- 3 Spikler. I 

 Periferien er der et Lag af kortere ac 2 sp. Spikler, som ere 

 tæt sammenpakkede og skjære hinanden i alle Retninger 



Myxilla grisea, n. sp. 



A flat, branchy light-grey sponge (Pl. VI. tig. 9) 

 which has, besides anc 2 3 spicules, only, smooth spicules, 

 partly, thin tr 2 , partly, thick tr' 2 and trac spicules ; both the 

 last named forms being slightly curved (PI. I, fig. 3). 



Habitat. 



Station No. 84. 



Myxilla brunnea. a. sp. 



A large, leaf-shaped, brown coloured sponge (PL VI, 

 fig. 5) having a cavernous surface. It has no solid 

 fibres (keratode fibres). As far as could be observed, its 

 spicules consisted of ne' 2 sp. and tr 2 sp. gently curved. 

 besides anc 2 3. (PI. Ill, fig. 1 .4). 



Habitat. 



Station No. 275. 



Myxilla flabelliformis, a. sp. 



Also a large leaf, of fan-shape, but grey in colour 

 (PI. VI, fig. 6). Neither does it contain any keratode 

 fibres. Its spicules are ac 2 anil anc 2 3, (PI. II. tig. 14). 



Habitat. 



Station No. 359. 



I have designated tin' two following sponges, Sclerilla, 

 and in doing so, lay stress upon the spicules only, without 

 paying any attention to Schmidt's sarcode membrane and 

 fibres. 



Sclerilla arctica. d. sp. 



A grey-coloured, flat, cake |with rounded margins, 

 somewhat oblong, and furnished at the one extremity, with 

 a fragmentary surface, which would appear to show, that it 

 had been seated on a thin stem (PI. VI, fig. 15). It consists 

 of fasciculi of ac 2 spicules, and between these fasciculi, 

 there is found a colourless sarcode, in which anc' 2 3 spic- 

 ules appeal - . In the periphery, there is a layer of shortish 

 ac 2 sp. spicules, which are closely packed, and intersect each 



