21,2 Shaw: Copelandosphaera 211 
circle are not all in the same plane. The daughters have ap- 
parently completed their growth divisions, and gonidia can be 
seen in all but two; these two I believe to be sexual daughters. 
Measurements of somatic cells were made in three daughters 
and of gonidia in eight. For the somatic cells the measurement 
is space per cell obtained by measuring a straight row of five 
cells and dividing by five. The gonidia in any one daughter 
are of about the same size. Examples showing the extremes 
are: : 
Width of somatic cells 2.9, 3.2, 3.2 «# 
Diameter of gonidia 5.0, 8.6, 11.0 4 
The gonidial protoplasts are sunk below the level of the so- 
matic protoplasts. Over each daughter on the nearer side of 
the mother the vacancy in the layer of somatic protoplasts of 
the mother forms an elongated space that is surrounded by 
seven or eight protoplasts. 
Specimen 2A.—On the same slide with the previously de- 
scribed specimens there is a very much shrunken mother coe- 
nobium with six daughters that are plump. One of "these is 
asexual, and five are sexual. The somatic cells of the mother 
measure about 5 » wide. The asexual daughter measured about 
225 by 255 p, consisted of about 23,000 cells about 3 » wide, 
and contained five gonidia that ranged from 18 to 21 » in di- 
ameter. The sexual’ daughters ranged in size from 230 by 245 
to 230 by 265 », and in number of cells from about 13,000 to 
about 26,000. The reproductive bodies measured about 9 » in 
diameter in the sexual daughters, and in one they were esti- 
mated to number about 190. 
Most of the micrographs used to illustrate the species were 
made from material collected at Pasay, near Manila, from a 
pond called J for labeling material from that source. The 
material was collected October 138, 1914, and mounted in glyc- 
erine. The photographed specimens will be described first. 
Specimen 3.—Plate 2, fig. 8. This is a young coenobium with 
fifteen embryonic daughters in about the 64-celled stage. The 
photograph shows that the phialopores of the embryos, each of 
which is directly under the vacant space in the somatic layer 
of the mother, are still open. The mother measures about 346 y» 
both ways. The protoplasts are about 4 to 5.5 » wide. Their 
spacing is about 10 », and the number of cells is about 4,300. 
The daughters measure about 29 to 43 ,» in diameter. 
Specimen 4.—Plate 2, fig. 10. This coenobium, shown on a 
smaller scale, contains eight more-advanced embryos. The | 
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