polysiphonous. The cells are, however, mostly divided into a 

 small number of segments, and often very irregular. Sometimes 

 a cell may be divided by an oblique wall into two triangular seg- 

 ments. The topcell of the main axis and those of the branches 

 of the first order are not seldom divided by a longitudinal wall 

 into two segments, each of them bearing a terminate plurilocular 

 reproductive organ or a branchlet, or the one a reproductive organ, 

 and the other a branchlet. 



The main axis is about 40 fi thick, the branches of the first 

 and second order gradually thinner. 



The plurilocular reproductive organs much resemble those in 

 Scaphospora speciosa Kjellm. They appear scattered on the main 

 axis and branches of the first order, partly terminate, partly and 

 more often sessile on a wart-like prominence. They are very dif- 

 ferent in shape, subcylindrical or more common cylindric- conical, 

 spool-shaped or clavate, and sometimes much contracted in the- 

 middle, 35—155 fi long and 25-45 ji thick. 



Plurilocular reproductive organs have not with certainty been 

 found in Haplospora globosa, and I am not sure whether the spe- 

 cimen in question may be referred to the named species, or per- 

 haps to Scaphospora speciosa However, the latter has always 

 been found with unilocular reproductive organs on the same indi- 

 viduals bearing plurilocular ones. 

 Trondhjem 21. X. 1892. 



