Catalogue of Non-Calcareous Sponges. 247 



canals internally, and its dark grey colour in life and in spirit. 

 My specimen is only a piece, so that I cannot confirm Carter's 

 observations on the remarkable canal system. 



R.N. 705 (s. 5 ; " dark slate, turns green in spirit "). 



B.M. sp. 14 {"Suberites insignis C. Type;" Reg. 86-12-15-125). 



Suberites wilsoni, Carter. 



Suberites wilsoni, Carter, A.M.N.H., February, 1885, p. 113. 



This species is quite unmistakable on account of its brilliant 

 carmine or purple colour, which is not lost either in spirit or in 

 drying, and which has a remarkable power of staining other 

 objects when it is bruised in sea-water. It grows to a large size 

 and is massively lobose, with large vents arranged along the 

 prominent ridges, and it usually contains a great deal of coarse 

 sand. 



R.N. 331 (IS f. ; "rich aster-purple"); 524 (x, 20 f . ; "aster 

 purple "). 



B.M. sp. 13 {"Suberites wilsoni, C"; Reg. 86-12-15-107); d. 

 113 (" Suberites wilsoni"; Reg. 86-12-15-253). 



Suberites spirastrelloides, n. sp. 



? Suberites wilsoni, var. albidus, Carter, A.M.N.H., February, 

 1886, p. 116. 



The single specimen is massively lobose, compressed to a 

 narrow ridge at the top. Surface warty below, slightly rugose 

 longitudinally above. Vents rather large, in close-set single 

 series on the ridge-like margin. Wide oscular tubes lead up to 

 the vents, running parallel up each flattened side just beneath 

 the surface in a very characteristic manner. Texture compact 

 but somewhat cavenious; scarcely compressible, with much coarse 

 sand internally. Colour internally, in spirit, sandy-yellow. (The 

 surface is now dark purple, but that this is due to artificial 

 staining, probably by some other sponge, is proved by the fact 

 that two of the cut surfaces have the same colour, and the colour 

 does not penetrate beyond the surface). 



Skeleton, extremely confused, composed of slender spicules, for 

 the most part abundantly and irregularly scattered, but with a 

 slight tendency to collect together in loose fibres which may then 



