and, especially m advanced specimens, by the contraction- of 
the tube at the dissepiments. It bears a far closer resemblance 
to C. bangioides, but is a shorter and comparatively stouter 
plant, and far less lubricous. The contents of the cells also 
are more granular and dense. 
It was originally discovered -by Mr. W. Weston Young, a 
friend of Dillwyn’s, to whom that author was imdebted for the 
drawings from which the plates that illustrate his work on the 
British Conferve were engraved, and to whom he has dedicated 
this pretty little species. 
Fig. 1. Tuft of Conrerva YounGaNna :—the natural size. 2. Portions of fila- 
ments in various stages. 3. Portion of a filament with a ripe sporidium :— 
both figures highly magnified. 
