MORPHOLOGIE UND BIOLOGIE DER ALGEN 889 
The slagsiieatian differs in some respects from that of other 
authors. The main groups are: I, Chrysomonadinew. II. Hete- 
roconte. III. Cryptomonadines. IV. Euglenacee. Y. Dino- 
eon VJs gape VII. Chlorophycee. VIII. Pheo- 
satisfactory to find that a home, which promises to be a permanent 
one, has been found for that vagrant genus Botrydium. Professor 
Oltmanns places Botrydiacew in Heteroconte, next to Confervacex. 
The view held by certain authors that Peridinee are allied to 
or Conju- 
gate alone. In such a book as the present, which will certainly 
ive the Jead in such me aie it is satisfactory to find the old name 
Charophee holding own against the ‘ Isoconte’’ of e 
ors. 6 Pathan ot Heterocontie and Aconte from Chloro- 
prese 1) 
containing two species of Bryopsis, under the name udlo - 
A Bertho ld MS. The cause of the separation is connected 
made to 
Soraiithahd; and Splach rena last provisionally. The treat- 
ment of Fucacee is saryery founded on the author 
Beitriige z. Kenntniss der Fucaceen, supplemented by the various 
: may be ed Pro 
on 
artition under other specific names. The multitude of figures 
throughout the book adds greatly to its usefulness, the more so 
