21,1 Shaw: Merrillosphaera 127 
PLATE 4 
Fic. 24, A mature female coenobium of Merrillosphaera carteri var. 
manilana with thirty-six oospores and two immature repro- 
ductive cells. X 100. 
25. A Venetian turpentine preparation of one of the smaller form. 
It contains twelve symmetrically arranged daughters of which 
the hindmost four are smaller than the others. The front of 
the coenobium is turned a little away from the observer. x 100. 
26. A Venetian turpentine preparation of one of the smaller form 
from the same source as the foregoing. Ten symmetrically 
arranged daughters include two that are smaller than the 
others and form a hinder pair. The front of the coenobium is 
turned slightly toward the observer. x 100. 
27. A Venetian turpentine preparation of one of the smaller form 
from the same source as the foregoing. It presents a side 
view showing eight gonidia symmetrically arranged. The go- 
nidia measure about 57 4. xX 100. 
28. A Venetian turpentine preparation of one of the smaller form 
from the same source as the foregoing. It contains eight goni- 
dia of, about 85 to 40 uw diameter. The coenobium is turned 
about 48° away from the observer. X 100. 
29. A portion of the same coenobium as that of fig. 24 showing two 
of the oospores and some of the somatic cells of the coenobium 
wall. In a direct view some of the spore walls appear more 
decidedly wavy than shown in this figure. x 400. 
80. A Venetian turpentine preparation stained with Bismarck brown. 
A nearly front polar view of a coenobium with eight daughters 
that form two groups of four. The thickness of the layer of 
somatic cells is shown to be greater between the daughters 
and less over the daughters. x 100. 
31. The same coenobium as shown in fig. 30, photographed after being 
rotated 90°. The poles had been flattened. Some of the boun- 
daries of the gonidial capsules can be seen. X 100. 
PLATE 5 
Fic. 32. Rear polar view of a coenobium with ten gonidia arranged in 
two groups of four that are about 64 u in diameter and a 
hinder pair that are about 53 » in diameter. x 100. 
88. An asexual coenobium with eight gonidia in two groups of four. 
An anomalous member of the forward four is smaller than the 
others, being only 28 » wide, while the others are 46 to 60 4. 
x 100. 
84. A mature asexual coenobium of Merrillosphaera carteri var. ma- 
nilana with ten asexual daughters, of which there is a hinder 
pair of smaller ones and two very symmetrical groups of four 
that are about equal. The front is turned about 24° away from 
the observer. There are probably eight gonidia or less in each 
daughter. x 100. ae 
35. An asexual coenobium of the smaller form. The eight gonidia 
have all divided into 2, 4, 8, 16, or 82 cells. X 100. 
