PLURILOCULAR ZOOSPORANGIA OF ASPEROCOCCUS. 823 
fig. 12), and these contain two rows of zoospores. In the cylin- 
drical form generally only one row is observed. 
describes these zoosporangia in M. adriatica Hauck 
(op. cit. p. 337) as cylindrical, about 80-40 » long, and 8-12 p 
thick, containing one row of zoospores, but this plant must be very 
different from M. claveformis, and, curiously, the unilocular zoo- 
sporangia were unknown to him. 
Karsakoff, Par 
Jiliformis collected at Roscoff, Finistare, (a district made classic by 
Expranation or Prate 314. 
Fig. Asperococcus bullosus Lamour., figs. 1—3. 
1. Surface view of a small sorus x 100.—a. Mature plurilocular zoosporangia. 
c. Do. empty. d. Paraphyses. e. An immature unilocular sporangium. 
2. Vertical section through a larger sorus x 100.—b. A mature plurilocular 
zoosporangium, some of the zoospores already discharged. The other 
lettering as in fig. 1. 
3. Mature plurilocular sporangium x 200. 
Myriotrichia filiformis Harv., figs. 4—12. 
4. A group of plants with plurilocular zoosporangia on Zostera, n. 8. 
5. Two plurilocular sporangia on the lower part of a thin plant x 100. 
6. Surface view of the thick part of a mature plant with plurilocular spotangia 
x 100. 
7. Part of transverse section of the same x 200, 
8, 9. Simple forms of plurilocular sporangia x 40). 
10. A divided or forked one x 400 
rani 
12. Mature typical sporangium x 400. 
_ All from specimens preserved in a saturated solution of sodium chloride. 
