126 
BIBLIOGRAPHY. 
having recently been able to examine the cystocarps of E. augus- 
tatum be thinks that the two genera are analogous rather than 
closely related. 
Other new species of Rhodophycece are Areschougia inteimnedia, 
which comes between A. Stuartii and A. ligulata , having fronds 
only half the diameter of the latter, with attenuate apices. 
A new Australian plant resembling Bindera , having tetraspores 
dispersed, and not in sori, but of which the cystocarps are un- 
known, is provisionally named Bindera? ramosa, and a new species 
of Chrysymenia, also from Australia, and bearing a considerable 
resemblance in habit to Gigartina pinnata , receives the name of 
C. Hussey ana. Another new Australian plant having cystocarps 
resembling those of Curdicea, but situated within, not on the 
margin, of the frond, and of which the tetraspores are unknown, is 
provisionally named Curdicea ? Irvinece. 
Dr. Agardh having recently had the opportunity of examining 
the fructification of Heringia ? filiformis, Harv., is able to state that 
Harvey rightly referred the species to that genus, and thus its 
position is confirmed. 
A new species of Plocamium , intermediate between P. procerum 
and P. corallorhiza, in which the curious little tufts of ramuli, so 
abundant on the species referred by Harvey to P. nidificum , 
are present. These tufts often occur not only on plants with 
cystocarps, but also on those with tetraspores. They do not 
afford any evidence of being antheridia, and should, in Dr. 
Agardh’s opinion, be regarded rather as an abnormal organ, 
intended to propagate the plant, after the manner of other algae 
(as in Spliacelaria) , by fixing themselves on other plants. Con- 
cerning the genus Wrangelia, it is suggested that the differences 
met with in the reproductive organs and their appendages in 
different species should lead to their grouping into sub-genera, but 
owing to our imperfect knowledge of the fructification of many 
species this cannot be thoroughly done at present. A new sub- 
genus, Ornithopodium, might, however, be formed for the reception 
of W. Wattsii , and W. clavigera should probably be separated as a 
distinct genus under the name of Kalidiophora. It will thus be 
seen that the algal flora of Australia is by no means exhausted, and 
that much remains to be done in biological work connected with the 
Dictyotacece. 
Dr. Agardh must be congratulated on the immense amount of 
work he gets through and the variety of important observations 
he is able to contribute, which at his advanced age is simply 
marvellous. 
E. M. H. 
