Smith—-Algae Found in Wisconsin Lakes 653 
The characteristic occurrence of small aggregates of four and 
eight cells, which forms the chief distinction between this and 
the other species of the genus, was also noted. Although I 
have observed many thousand colonies I have never noted the 
characteristic change to a yellowish color that the Wests de¬ 
scribe. 
I. George (a), Pardee (rr). 
Family CHLOROBOTRYDACEAE 
Genus CHLOROBOTRYS Bohlin 1901. 
Chlorobotrys limneticus sp. nov. 
Cells ovoid, irregularly distributed within a homogeneous, 
hyaline, gelatinous integument. 10-80 cells in each colony. 
Chromoplasts disc-shaped, parietal, 3-4 in each cell, without 
pyrenoids, pale yellow-green. (Plate 14, fig. 10). 
Length of cells 6-8 /a, width 5-6 {i, Diam. colony 40-200 ju. 
The general appearance of the colony is quite similar to 
Phaeococcus planctonicus W. & G. S. West but the color of the 
chromoplast is the typical yellow green of the Heterokontae. 
I. Camp (rr). 
