268 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
EXPLANATION OF PLATE IX 
Photographed by E. W. Gifford 
Fig. 1. Opuntia insularis Stewart, specimen from Tagus Cove, Albemarle 
Island. 
Fig. 2. Opuntia galapageia HENSL., mature specimen from Hood Island 
with closely arranged branches. 
