478 H. V. Brondsted. 



from 1 — ca. 8 mm., the consistency is like that of loose felt; color grey; 

 the surface (both dermal and gastral) hispid. The characteristic 

 pentactine prostalia pleuralia project 4—5 mm. from the dermal sur- 

 face of the sponge, the cross naturally placed distally, outside the 

 spongebody; these pentacts, whose rays are imbedded in mud, are 

 only found in a few places, especially where the 3 individuals to- 

 gether form a corner; in other places they are rubbed off (on the 

 figure, PI, XXV, more are drawn than really observed). The summits 

 of the sponge-individuals are provided with a damaged fringe of 

 prostalia marginalia. The canal system and skeletal arrangement 

 are as in the Rosellidae in general, and Rhabdocalijptus especially. 



Spiculation. 1°. Oxydiacts, length about 10 mm., form the main 

 skeleton, in fibres principally parallel with the sponge-surface; 2°. 

 Pentacts (PI. XXVI, fig. 4), ca. 6 mm., very strongly hispid (a pro- 

 nounced Rhabdocalyptus criterion); these form the prostalia pleuralia, 

 but are also imbedded in the sponge-corpus itself, the tangential 

 rays immediately beneath the dermal membrane; 3°. Oxypentacts, 

 (PI. XXVI, fig. 3), hispid, sustaining the dermal membrane, the distal 

 radial ray rudimentary (criterion for Rosellidae). 3 a°. Oxypentacts, 

 smooth, the radial ray 3 — 5 times the tangential ones, in the dermal 

 membrane (?) very rarely found; I regard these spicules as strange 

 elements to the sponge itself. 4°. Oxyhexasters, hispid, (PL XXVI, 

 fig. 2) form the gastral skeleton (PI. XXVI, fig. 1), and are also distri- 

 buted in the parenchyma. 5. Oxydiacts (PI. XXVI, figs. 5 — 5 c) hispid, 

 the ends rather blunt, a swelling near the middle, a swelling which 

 often assumes the form of 4 knots or even 4 short rays ; distributed 

 in the parenchyma. 6°. Diaets (PI. XXVI, fig. 6— 6 b) styliform, 

 hispid, length 1 — 2 mm., somewhat bent near the blunt end, where the 

 axial cross is to be found. 7°. Oxyhexacts (PI. XXVI, figs. 7 — 7 a) 

 hispid, ca. 0,120 mm.; one or more rays often divided in two (fig. 7 a), 

 always bent in the end; occur everywhere in the sponge. 



Station 104 b. Lat. 76°06' N. Long. 13°26' W., gravelled clay 

 bottom. 



Depth: 250— 200 m. 



Fam. Asconematidae. 

 Subfam. Asconematinae. 



Genus Asconema Saville Kent. 



Asconema setubalense Sav. Kent. 



1870. Asconema setubalense Saville Kent [14], p. 241. 

 1887. — — Schulze [26], p. 116, PI. XXI. 



