No. 5] REVISED SYSTEM. SURVEY OF THE MELOBESIEAE. 7 



sidered an independent genus cannot be ascertained till future in- 

 vestigations will be set on foot. Under any circumstances it is 

 difficult to draw an accurate line between the latter and Eulitho- 

 phyllum. On the other hand the conceptacles of the said subgenus 

 sometimes approach those of divers species of Goniolithon after 

 the lipper part of the conceptacles has been dropped in the latter. 

 In the above quoted List of Lith. pubiished shortly after the 

 said Syst. Surv. I included all species described at the time as 

 separate ones and known to me, among them such as I already 

 at the time considered to be identical with divers species earlier 

 described, or such as ought to be subsumed as forms of other 

 ones. I nevertheless quoted them independent mostly for want of 

 type specimens. But later on several other species have been 

 added, partly new, partly earlier described, but unknown to me 

 at the time. Owing to this the list now is rather different from 

 the former. Besides, several species are here put down in a paren- 

 thesis as being partly certain partly almost certain synonymes with 

 the species under which they are subsumed, but in most cases 

 with a subjoined interrogation point, because I as yet have not 

 had the opportunity of making an exact comparison, or failing 

 authentical specimens, or the species concerned only being known 

 in a sterile state. A closer explanation on the subject will be~ 

 offered later on. 



Trondhjem, May 1900. 



