526 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Marine Algae. 



EXPLANATION OF PLATES XXI-XXIV. 



Plate XXL 



Pig. L Portion of specimen of Hypoglossum crassinervium (?) from Campbell Island. (Natural size.) 

 Fig. 2. Portion of specimen of Hypoglossum crassinervium, St. Clair, Dunedin. (Natural size.) 



Plate XXII. 



Fig. 1. Portion of a frond of Ceramium stichidiosum, var. Smithii, showing divaricating pinnules. 



(Magnified.) 

 Fig. 2. Fragment of frond of Euzoniella cuneifolia. ( x 20.) 



Fig. 3. Fragment of frond of Euzoniella flabellifera. ( x 20.) (Form from St. Clair, Dunedin.) 

 Fig. 4. Fragment of same from Snares. ( x 20.) 

 Fig. 5. Fragment of same from Campbell Island. ( x 20.) 



Plate XXIII. 



Fig. 1. Portion of frond of species of Griffithsia (?) from Enderby Island. ( x 15.) 



Fig. 2. Node of same. ( x 150.) 



Fig. 3. Portion of stem and base of pinnule of Euzoniella cuneifolia, to show shape and arrangement 



of cells. ( X 100.) 

 Fig. 4. Portion of stem and pinnule of Euzoniella flabellifera, to show shape and arrangement of cells. 



Specimen from Snares. ( x 100.) 

 Fig. 5. Fragment of frond of Euzoniella adiantiformis, from the Blufi (collected by Berggren, type 



specimen of J. Agardh), given for comparison with E. cuneifolia and E. flabellifera. ( x 20.) 

 Fig. 6. Portion of stem and pinnule of above. ( x 100.) 



Fig. 7. Portion of stem and pinnule of E. flabellifera. Specimen from St. Clair, Dunedin. ( x 100.) 

 Fig. 8. Portion of stem and pinnule of E. flabellifera. Specimen from Campbell Island. ( x 100.) 



Plate XXIV. 



Fig. 1. Fragment of Ceramium stichidiosum, var. Smithii, showing joint-cells and cortication. ( x 500.) 



Fig. 2. C. stichidiosum, var. scopulorum, showing cystocarps. ( x 50.) 



Fig. 3. Rhodymenia diehotoma : Transverse section of frond. ( x 240.) 



Fig. 4. C. stichidiosum, var. Smithii, showing tetraspores. ( x 100.) 



Fig. 5. Rhizoclonium Hookeri : Portion of creeping rhizome, showing rhizoid and young filaments. 



( X 50.) 



Fig. 6. R. Hookeri : Tip of an older filament. ( x 50.) 



