320 
Batters . — On some New 
apical cells of the main stems rounded, those of the secondary 
branches often pointed : chromatophores small, oval, many 
in each cell. According to the Crouans the cruciate tetra- 
spores are situated in the continuity of the main stems. 
Dredged from deep water in Plymouth Bay, December, 
1894. 
EXPLANATION OF FIGURES IN 
PLATE XI. 
Illustrating Mr. Batters’ paper on New British Marine Algae. 
Buffhaniia speciosa, Batt. Figs. 1-10. 
Fig. 1. Plant natural size in situ. 
Fig. 2. A very young plant, x 200. 
Fig. 2 b. Apex of young plant, x 500. 
Fig. 3. Apex of young frond ending in two hyaline hairs, x 500. 
Fig. 4. Surface of sterile frond showing chromatophores. x 500. 
Fig. 5. Section of frond before the appearance of the assimilatory filaments, 
x 250. 
Fig. 6. Base of frond showing the rhizoidal filaments, x 600. 
Fig. 7. Apex of young fertile frond, x 100. 
Fig. 8. Transverse section of fertile frond showing sporangia, assimilatory 
filaments, and hyaline hairs. X400. 
Fig. 9. Longitudinal section of fertile frond. X200. 
Fig. 10. Branched sporangium and assimilatory filaments. X500. 
Myriotrichia dens a, Batt. Figs. 11-13. 
Fig. 11. Tuft of peripheral branches with empty plurilocular sporangia, x 300. 
Fig. 12. Tuft with both full and empty plurilocular sporangia and an unilocular 
sporangium, x 300. 
Fig. 13. Portion of peripheral branch with a branched plurilocular sporangium. 
X300. 
Myriotrichia clavaeformis , Harv. var. subcylindrica , Batt. 
Fig. 14. Three of the peripheral branches with unilocular sporangium. X300. 
