It was with much pleasure that I received from Prof. N. WILLE, 

 Ghristiania, a request that I would undertake the description of the 

 sponges that had been obtained during the Second Norwegian Arctic 

 Expedition in the Tram", 18981902. the more so as I had already 

 described the collection of arctic sponges in the State Museum in 

 Stockholm. 



There were only two specimens obtained during the above-mentio- 

 ned Norwegian arctic expedition, one belonging to the Calcispongiae, the 

 other to the Silicispongiae. 



Sycandra H. 



Sycandra ciliata H. 



Grantia ciliata FLEMMING (Brit. Animals, p. 525, No. 14). 

 Grantia ciliata GRAY (Proc., Zool. Soc., 1867, p. 554). 

 Sycandra ciliata H^ECKEL (Die Kalkschwamme, p. 296, pi. 51, 

 figs. 1 a 1 t; pi. 58, fig. 9). 



This species is represented in the collection by only one specimen, 

 its length being about 10 mm., and its diameter about 3 mm. The 

 specimen forms a cylindrical tube, and is furnished with a short 

 ciliary tube of long acerate spicules. The outer surface is slightly 

 roughened, and the central cloaca is nearly as long as the sponge. 



The colour is creamy white in the dried state. The skeleton consists 

 of triradiate and quadriradiate spicules with large acerate spicules 

 projecting from the dermis and peristome. 



The triradiate spicules are the most numerous, and most variable 

 in size and form. The rays are of different lengths, and in some spi- 

 cules are curved, while in others they are straight. 



The quadriradiate spicules are very few in number, and the propor- 

 tion of the apical rays to the others is about as 2:1. 



