which searcely is wished by anyone, who has to do with the arrangement of 
fern-herbaria. An eventual new edition of the Index, and not a supplement, 
should be the right place for a thorough revision of the generic nomenclature, 
The supplement, therefore, closely follows the Index as well as to generic 
nomenclature as to the delimitation of the genera, excepting only a few smaller 
genera (f. inst. Cyrtomium, Lomagramma, Schizostege), that are here removed 
from the larger genera with which they were united in the Index. 
In the first part of the Supplement are enumerated 33 names of proposed 
new genera and subgenera and 2611 specific names. The number of species 
described as new 1906— 1912 and adopted in the Supplement are 1644. 
In the Corrigenda 248 species in Index adopted as valid ones are reduced 
to synonyms, while 75 older species are restored. The number of species 
adopted in Index is 5940, which number now should be reduced to 5767. The 
number of species of ferns adopted end 1912 is thus: 5767 -F 1644 — 7411. 
Copenhagen, Dec. 1913. 
: CARL CHRISTENSEN. 
