the ^ Challenger ' Monaxonida. 335 



[Toxoehalina rohicsta, Ridley. 

 Locality. Off Bahia, 7-20 fath.] 



Subfamily iii. Tedaniina. 



Spicules acuate and cylindrical (the latter chiefly dermal), 

 and long hair-like trichites. 



Genus Tedania (Gray). 

 Acuates smooth. 



Tedania commixta^ n. sp. 



Massive, amorphous. Creamy yellow. Soft and compact, 

 with much foreign matter. Surface slightly corrugated. 

 Dermal membrane thin, distinct. Skeleton of loose wisp- 

 like fibres. Spicules : — (1) hastately-pointed acuates, slightly 

 curved, size '3 by '0042 millim. ; (2) bicapitate cylindricals 

 with slightly developed oval heads, size '6^ by '004 millim. ; 

 (3) fine hair-like trichites, "13 millim. long. 



Locality. Station 162, Bass Strait, 38 fath. 



Tedania massa, n. sp. 



Massive, cake-like, attaining enormous dimensions. Very 

 soft and spongy. Surface fairly even, very minutely hispid. 

 Vents scattered, level with surface. Skeleton loosely reticu- 

 late. Spicules : — (1) stout acuates, curved, subhastately 

 pointed, often blunted, size "7 by '03 millim. ; (2) cylindri- 

 cal, straight, hastately pointe(|, sometimes with small heads, 

 size •45 by "013 millim.; (3) acerate trichites up to "8 millim. 

 long, often collected into fibres. 



Localities. ? Station 163 D, New South Wales, 120 fath. ; 

 Station 313, east of Straits of Magellan, 55 fath. ; Station 320, 

 off Eio de la Plata, 600 fath. 



Tedania infundihuUformisj n. sp. 



Erect, lamellar, funnel-shaped. Height 2^ inches, breadth 

 2 inches. Pale yellow. Soft and very fragile. Vents 

 small, scattered on inside of cup. Skeleton a loose, slightly 

 fibrous reticulation of rather slender acuates, with bicapitate 

 cylindricals, in tufts or scattered, at the surface. Spicules : — 

 (1) almost straight slender acuates, sharply and rather sud- 

 denly pointed, size "54 by "015 millim. ; (2) slender bicapi- 



