218 The Philippine Journal of Science 1922 
TABLE 1.—Sizes of coenobia and numbers of cells in Copelandosphaera 
dissipatrix gen. et sp. nov. 
ASEXUAL COENOBIA. 
Specimen No. ee Somatic cells. tes  ongpie 
é 
Be 
BO rear eee eee aes et cme eee aeeee 2, 250 25, 900 9 
eee oak aaah S pdupeeanes bases 1, 860 20, 000 8 
gt te Rant eg Oi tia Sg eS, yes Ge = 1,050 52, 600 9 
20 cc cabwiucuspabuadcaenb its a eet Me aoc 950 18, 000 10 
Seis ecescbettldeiece b720 12, 000 10 
f Be aes Rien sees 6700 10, 900 6 
Oa ie ana ee i a a a ew Me os ww ee b 604 14, 000 8 
o b 590 16, 000 10 
Se Gs ae a san ncee ee cous b517 6, 000 4 
SEXUAL COENOBIA. 
Bee pcsaua teen cen nds Wephoy uecee aseoe Gc Gaes coe bos b973 25, 000 112 
WO cocks antec os ace bg40 19, 600 130 
Toei ee se 660 19, 000 500 
ew arse ean du pac usuucounuctsuacueaedcacewacuesa b 660 17, 600 127 
Be nace eee ce ae Causa SURE Te i a a b 6380 11, 500 60 
Siti Scena ee cuGh amas eeucct esse as 900 10, 700 52 
es ecg a ee ee ee b530 10, 700 47 
BO is ciasanin ease albaignrs sienna des arian naie aca a b545 9, 600 64 
Be tila hs were aan auee bale eee ear ee nie eee 6540 9, 200 50 
8 Venetian turpentine preparation. > Glycerine preparation. © Not described, 
COPELANDOSPHAERA SPERMATOSPHAERA (POWERS) COMB. NOV. 
Powers (’07) gave a description of a form that he distin- 
guished as his “first form of Volvox” based on material collected 
from a shallow remnant of a prairie pond containing consider- 
able alkali. In the following year he extended the description 
to embrace the characters of material received from the State 
of Washington, from Missouri, and possibly from Louisiana, 
and named it Volvox spermatosphara Powers (’08). The name 
was emended by West (’10) to V. spermatosphaera. Powers’s 
description is the most complete ever written by the author of 
any new species of the Volvocaceae, and his beautiful photomi- 
crographic figures mark the beginning of a new epoch in the 
study of the members of this family. Our knowledge in this 
field will not begin to be satisfactory until we have similar photo- 
graphic illustrations of all the known species of the group. 
The shape of the coenobia, described by Powers (’08, pp. 145 
and 151) as uniformly and strongly oval, might possibly better 
be characterized as strongly ellipsoidal, for they do not have one 
end regularly larger than the other as is commonly the case in 
