98 



PORIFERA. I. 



Gcogr. distr. Fristedt has the species (a small fragment) from the east coast of Greenland, 

 depth 130 fathoms. 



Note. As before mentioned, the four Desmacelta-s'pecies enumerated here, appear to be nearly 

 related, showing great correspondence as well with regard to their skeletal structure and spiculation, 

 as also their outer form and the structure of their skin seem to be corresponding. We might, perhaps, 

 be justified in establishing a special genus for them, to which genus some more species would then 

 have to be referred, as all species with rhaphides of one or more sizes seem to be nearly related, and 

 must be grouped together. I shall here put together the hitherto described species that are possessed 

 of rhaphides; with regard to the species not described here, I give the measures according to the 

 authors in question: 



