SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 73 
diatoms of San Pedro. It was a species of diatom without 
color. It moved, acted and lived like a diatom, was a navicula. 
Fig. 2. Aulocodiscus, Mag. 2U0 Diam. 
Micro Photograph by S. J. Keese 
but had no brown pigment, no chloraptyll and sailed as a 
phantom among its fellows. 
Fig.3. Mag. 200 Diam. 
Micro Photograph by S. J. Keese 
