368 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



Figure 1. — Fucus, a brown seaweed common along the beaches of the Aleu- 

 tian Islands. Rat Island, June 29, 1937. 



Figure 2. — Calcareous algae of the Lithothamnion group commonly attach to 

 the holdfasts of kelp and are stranded during storms. Ogliuga Island, August 

 4, 1937. 



