among the ramelli at or near the ends of the smaller branchlets. Tetra- 

 spores attached to the ramelli, formed by the transformation of one of the 

 lateral segments. Colour a deep'full-red, rosy toward the tips. Substance 

 soft and spongy, but not very gelatinous. In drying the frond adheres 

 closely to paper. 



A robust species of Crouania, intermediate in size between 

 C. attenuata and C. insignis. From both these it is at once 

 known by the perfectly continuous villum of ramelh that clothes 

 every portion of the axis, so as completely to conceal its articula- 

 tion. In very few places is there any interruption of the con- 

 tinuity, or disposition to become nodose. 



Crouania is nearly allied to CaUithanmion, but has a peculiar 

 habit, and is sufficiently distinct in character. The finest species 

 is C. msipiis, figured in Hooker's ' Mora Tasmanica,' and which 

 therefore will not be re-figured in the present work. 



C. attenuata, the earliest-known species, is found in Europe, 

 the Gulf of Mexico, and on the coasts of Australia. 



rig. 1. Crouania vestita, — the natural size. 3. Apex of a branch. 3. Trans- 

 verse section, at a node. 4. Favellce (partly) surrounded by ramelli, some 

 removed. 5. A tetraspore on a portion of a raraellus : — wq-xioxx^X^ magnified. 



