the ^Challenger ' Monaxonida. 481 



Axinella fihrosa^ n. sp. 



Massive, lobate. Height 6^ inches. Greyish yellow. 

 Soft, spongy, coarsely fibrous. Surface subglabrous but 

 conulose. Skeleton of stout branching fibres, coming to the 

 surface in tufts. Fibre consisting of a plumose core of acuate 

 spicules almost entirely sheathed in spongin, diameter about 

 •4 millim. Spicules smooth acuates, slightly bent toward? 

 the base, usually very gradaally sharp-pointed, size "GS by 

 •015 millim. 



Locality. Station 313, east of Straits of Magellan, 55 fath. 



Axinella reticulata^ n. sp. 



Massive, sessile, with short, thick-walled, oscular tubes 

 above. Height 1-|- inch. Pale yellow. Very firm. Surface 

 conulose, but glabrous. Skeleton an irregular reticulation, 

 with loose plumose fibres. Spicules: — (1) smooth, slightly 

 curved acuates, sharp-pointed, size '45 by '02 millim. ; (2) 

 smooth, curved acerates, sharp-pointed, of same size, scarce. 



Locality. Bahia, 7-20 fath. 



Axinella monticularis^ n. sp. 



Massive, sessile, apparently free ; diameter about 1^ inch. 

 Yellowish grey. Firm and compact, containing much foreign 

 matter. Surface abundantly conulose. Skeleton composed 

 of stout plumose columns ending in the surface-conuli. Spi- 

 cules : — (1) smooth, gradually sharp-pointed acuates, size 

 •6 by '0126 milHm.; (2) entirely spined, usually subspinulate, 

 gradually sharp-pointed, size about '12 by '0066 millim. 



Locality. St. Vincent, Cape Verd Islands, shallow water. 



Axinella'? luncecharta^ n. sp. 



Massive, sessile. Diameter about 1^ inch. Pale yellow. 

 Fairly firm, but rather spongy. Surface glabrous, with nume- 

 rous small monticular eminences, and fewer but much laro-er 

 projections, each with a crateriform depression at the top, in 

 which are the minute oscula. Skeleton loosely reticulate. 

 Spicules : — (1) smooth acuates, gradually sharp-pointed, size 

 •4 by -014 millim. ; (2) smooth acerates, usually gradually 

 sharp-pointed, commonly with unequal ends, size '35 bv 

 •0126 millim. 



Locality. St. Vincent, Cape Verd Islands, shallow water. 



