822 PLURILOCULAR ZOOSPORANGIA OF ASPEROCOCCUS. 
apices of the paraphyses are not so dark, and are smaller, less 
numerous, not so high, and far less obtrusive. Such a view of a 
i i : ie 
m n fig 
section through a larger sorus containing sporangia of different 
ages is drawn in fig. 2. Lastly a mature sporangium is seen in 
fig. 3 : 
. 
ee 
Thuret and Bornet (op. cit. p. 14) have pointed out the difference 
between the unilocular sporangia of Punctaria and Asperococcus, and 
D . 
growing on Zostera in the little harbour of age, D g 
87. From a spreading dise of interlacing fibres thin filaments 
arise of (12 mm.) to 1 inch (25m in height, almost 
black, attenuated at the base; a short distance above the base they 
_ At this juncture Dr. Bornet, to whom I submitted specimens, 
kindly determined them to be the species just named. The most 
recent authors including Hauck (Die Meeresalgen Deutschlands und 
ne coward parts of the plant portions of 
. transverse section here (fig. 7 
shows more elongated branches and cells, an many of the ne 
arise from the terminal cells. Not only do they vary in arrange- 
11), many being nearly cylindrical 
while others are as short as 25 p 
