92 The Philippine Journal of Science 1922 
oogonia. I will describe somie of these specimens in order to 
bring out points that are not shown by the type specimen. 
Specimen 2.—This coenobium contains eight embryos and pre- 
sents an almost polar anterior view. Diameter, about 505 as 
thickness, about 365 ,; protoplasts, about 5 pa. Spacing of 
centers of cells: Anterior, about 20 »; posterior, about 12 »; and 
mean, about 15 ». Estimate of somatic cells, 4,100. In the me- 
dian focus there is seen a delicate line nearly parallel with the 
periphery of the optical section of the coenobium, forming an 
ellipse 280 by 300 » in diameter, lying 110 to 120 p within the 
outer membrane. The eight embryos lie in the zone between 
this line and the layer of somatic cells. These embryos are 
about 90 » in diameter, and those that show clearly near the 
median level and above it have their phialopores directed 
outward. Around each embryo there are two distinct lines ; 
these are the inner and outer limits of an embryo capsule 
which was formed by the wall of the gonidium from which 
the embryo developed. The embryo capsule touches the embryo 
on the side toward the center of the mother coenobium, is about 
10 to 15 » from the surface of the embryo around the equatorial 
plane of the embryo, and approaches without touching the em- 
bryo on the outer side. Around the equatorial region of each 
embryo its capsule is about 30 p» thick, while toward the poles it 
thins down until at the poles it becomes very thin, as if under 
radial pressure between a central coenobial core and the somatic 
layer of the mother coenobium. All the embryos show a few 
protruding gonidia, and these are most evident in the profile 
views of the embryos. The somatic cells are very much smaller 
than the gonidia. The embryonic phialopores are all more or 
less open and have the form of a four-pointed star. This is 
produced by the growth about the phialopores of four marginal 
_lobes which for a time do not fit together, but which leave 
the star-shaped opening between them. The extent of the 
star is about one quarter of the circumference of the embryo. 
In some of the embryos the lobes are Slightly raised and 
bent outward and bear on their tips one or more larger 
cells that are intermediate in size between the gonidia and 
the somatic cells. The embryos are so far apart that their 
capsules are not in contact with one another. 
Specimen 3.—This coenobium contains eight embryos. It pre- 
sents a side view, with the anterior pole a little lower than the 
posterior pole. Dimensions, 560 by 600 wu. Spacing of cells: 
