SOME NEW ALGÆ FROM JAPAN. 287 



Explanation of Plates. 



Plate XIII. 

 Figs. 1—9. Wildemania btdbopes. 



1. A young frond, natural size. 



2. A mature frond, natural size, the terminal part eroded away. 



3. The basal inflation, moderately magnified. 



4. Longitudinal section of a basal part through the attachment disc. The 

 walls of the inflated portion above the disc are more closed than in 

 the natural state, owing to the elasticity of the disc. X 65. 



5. Cross section of a portion of the inflated part. X 285. 



6. Cross section of a vegetative area. X 285. 



7. Cross section of a carpogonal area. X 285. 



8. Surface view of a carpogonal area. X 285. 



9. Surface view of a vegetative area. X 285. 



Figs. 10 & 11. Coilodesme bulligera f. fucicola. 



10. Fronds, natural size. 



11. Cross section of frond with sporangia. X 285. 



Figs. 12 — 17. Chordaria Gunjii. 



12. Fronds with unilocular sporangia, natural size. 



13. Fronds with plurilocular sporangia, natural size. 



14. Longitudinal section of a frond at a point close to the base. X 285. 



15. Cross section of frond through a point a little above the base. X 285. 



16. Longitudinal section of frond with plurilocular sporangia. X 285. 



17. Longitudinal section of frond with unilocular sporangia. X 370. 



Plate XIV. 

 Figs. 1—12. Benzaitenia yenoshimensis- 



1. A branch of Chondria crassicaulis Harv. with the sporangial warts 

 of the parasite. Natural size. 



2. Two stichidial warts. X 3. 



3. Cystocarpic wart. X 5. 



4. Longitudinal section of an antheridial wart. The cells belonging to the 

 parasite are indicated by showing their contents. X 37. 



5. The early stages of development of the antheridia. X 150. 



