106 The Philippine Journal of Science 1922 
goes on increasing in size, and the starch-cells and chlorophyll increasing 
in number and quantity respectively, until a sudden re-arrangement of 
the gonimic contents takes place, and the whole is transformed into a 
globe of peripheral cells. 
The figure (Plate 7, fig. 44) shows a gonidium about 85 p 
in diameter. It represents the chloroplasts as forming a pe- 
ripheral network with expanded nodes containing pyrenoids. 
The resemblance of the nodes of the chloroplast network in 
this figure to the somatic protoplasts of Volvox globator (com- 
pare Overton, ’89, pl. 1, fig. 4) is so great that Klein (’89A, 
p. 196) was led to interpret the figure as representing a small 
coenobium of that species. The vacuolate protoplasm with the 
centrally suspended nucleus is not suggested by the drawing 
and was not noted in the description. It seems to me that 
Carter’s failure to observe any details of the segmentation of 
the gonidia and development of the resulting embryos was prob- 
ably due to lack of observations made on the living material 
late in the afternoon or in the night. 
Antheridial or oogonial daughter coenobia were observed by 
Carter in mother coenobia containing also gonidial daughters. 
Oogonia and antheridia were not found in the same coenobium, 
nor were daughter coenobia of both sexes found in the same 
parent. 
In single parents one, two, three, and even all, of the progeny 
were male. They were never more than half of the size of the 
asexual daughters. The antheridia numbered upward of one 
hundred in each male coenobium, and were scattered indiscrim- 
inately over the whole of the internal periphery. 
The androgonidia (called spermatic cells) were described as 
reaching a diameter of 40 y, his fig. 8a (Plate 8, fig. 48). They 
underwent division to form, each, a circular, tabular group of 
linear ciliated sperms arranged vertically upon the same plane. 
The spermatozoids were supposed to number one hundred twenty- 
eight in each platelet. The surface-view drawing, his fig. 10 b 
(Plate 8, fig. 49 6), which was cited for illustration of the 
antheridium of this species represents about ninety-three sperms. 
It is to be noted that the same drawing is used for illustration of 
the other species that was described in the same paper. 
The spermatozoids were described as linear, horn-shaped, 
about 11 » long; anteriorly attenuated and colorless, posteriorly 
greenish; provided with a pair of cilia which are attached to 
the anterior extremity, and with an eyespot some distance back 
of the tip (Plate 8, fig. 50 a, b, c). The progression of the 
