98 The Philippine Journal of Science 1922 
preparations were made, large quantities of material have been 
collected in different years. 
The form selected to serve as the type of Merrillosphaera car- 
teri var. manilana has most commonly eight gonidia, of which 
four form a quartet of equidistant gonidia lying in a transverse 
plane a little in advance of the equatorial plane and the other 
four ‘form a similar quartet just back of the equatorial plane, 
the members of the two quartets being located on alternating 
longitudinal radial planes. In such cases the reproductive 
bodies occupy a middle zone of the coenobium and leave two 
polar zones without reproductive bodies. In other cases there 
is no empty space back of the hinder quartet. A third quartet 
of gonidia may be present in the hinder part of the coenobium 
or may be represented by fewer than all of its members. When 
two of these members are present they are usually on opposite 
sides of the polar axis. The members of the third quartet are 
smaller than the others, whether gonidia or daughters, and their 
segmentation is commonly delayed with respect to that of the 
others. Occasionally members of the second quartet are lacking. 
Some examples of the numbers and arrangements of the asexual 
reproductive bodies are given in the following descriptions of 
coenobia that have been photographed. 
A mature asexual coenobium containing only asexual daughters 
is shown in Plate 2, fig. 8. This specimen (No. 13) is one of 
a collection taken from Pond C on the day after the type 
material was collected, and fixed on the same day. When pho- 
tographed in 1916 the preparation in which it was included 
seemed in fairly good condition, but by 1919 most of the speci- 
mens on the slide had become disorganized. The micrograph 
shows a coenobium about 620 by 700 » and an average spacing 
of the somatic cells of about 17 ». These figures correspond 
with a cell number of about 5,200. Camera lucida sketches of 
six of the eight daughters gave eight gonidia in each. The 
other daughters were too obscure for sketching. The gonidia 
were about 20 to 24 » in diameter. 
A mature asexual coenobium with nine daughters is shown in 
Plate 6, fig. 39. This specimen (No. 14) is from the same prep- 
aration as the preceding one. From the photograph the number 
of somatic cells appears to be about 8,600. 
A mature asexual coenobium with ten daughters is shown in 
Plate 5, fig. 34. This specimen (No. 15) is also from the same 
collection as the preceding one. It is very much flattened by the 
