viii CONSPECTUS OF VOLUME III. 



Fam. IV, DICTYOTEiE. — Olive -coloured, inarticulate sea-weeds, whose 

 spores are superficially disposed iu definite spots or sori. Containing: 



Genus 1. — Cutleria. 

 2. — Haliseris. 



3. — Padina. 



4. — Zonaria. 

 5. — Taenia. 

 6. — Dictyota. 

 7. — Stilophora. 



8. — Dictyosiphon. 



9. — Striaria. 

 10. — Punctaria. 

 1 1 . — Asperococcus. 

 12. — Litosiplion. 



Fam. V. CHORDAEIEJE. — Olive-coloured sea-weeds, with a gelatinous or 

 cartilaginous frond, composed of vertical and horizontal filaments interlaced 

 together. Containing : 



Genus 1. — Chordaria. 

 2. — Mesogloia. 

 3. — Leathesia. 

 4. — Ralfsia. 

 5. — Elachista. 

 6. — MjTionema. 



Fam. VI. ECTOCAEPEffi. — Olive-coloured, articulated, fiUform sea-weeds, 

 whose spores are usually external and attached to the jointed ramuli. Con- 

 taining : 



Genus 1. — Cladosteplius. 



2. — Sphacelaria. 

 3. — Ectocarpus. 

 4. — Myriotrichia. 



