196 The Philippine Journal of Science was 



the coenobium. There are twenty-seven oospores in the coe- 

 nobium. They have smooth walls that measure about 43 /*, 

 in outside diameter and about 37 /* in inside diameter. Some 

 of the oospores that appear in pairs are on the same side of 

 the coenobium, and some are on opposite sides. Some of the 

 closest pairs are on the same side, but so far as can be made out 

 they do not arise from contiguous cells in the somatic layer. 

 They are, therefore, not sister cells. At the middle level of the 

 coenobium there is an antheridial site on the nearer side a little 

 to the left of the oospore at the extreme right, and another on 

 the farther side a little to the right of the oospore at the extreme 

 left. On the farther side there is also an antheridial site just to 

 the right of the foremost member of the left hindmost pair of 



Table 1. — Reproductive contents of some preponderatingly ) 

 of Merrillosphaera africana at Manila. 



enrnle c 





s „. 



°2S2 



A ?|sr 



a_h..| »~ 



m 2 



^r 



•. 



! * 



: 



:I:S 



l 

































In this little series of coenobia with preponderatingly female 

 reproductive bodies the number of oogonidia or oospores ranges 

 from twelve to thirty-two as is shown in Table 1. Their great- 

 est size before birth is about 29 fi. The ripe oospores are about 

 43 ii wide with a wall about 3 p. thick. Reproductive bodies are 

 absent from the front of the coenobia. The androgonidia are 

 two or three. Two form a pair, located on opposite sides of 

 the middle of the coenobium, as are all of the larger gonidia of 

 asexual coenobia. The androgonidia reach a size of only about 

 19 fi and divide before the birth of the coenobium containing 

 them. The antheridium is a sperm platelet. 



