The genus Bangia has long been a receptacle for heterogeneous 
species, and though partially reformed by M. Chauvin in the 
excellent memoir above quoted, it can hardly be said that in 
making the present plant a species of Bangia he has more than 
indicated its near affinities. For though doubtless allied to 
Bangia, its structure is more simple than in the genuine members 
of the genus, and it stands nearer perhaps to Spheroplea of 
Agardh. It might, however, be more properly regarded as the 
type of a new genus characterized by the binate spores. 
Fig. 1. Tufts of BANGIA ELEGANS, growing on GRACILARIA CONFERVOIDES :-— 
the natural size. 2. A frond, magnified. 3. A young apex. 4. A portion 
of the older part of the frond :—highly magnified. 
