Hooper, 1938 2 mi. S Saratoga, 2000ft., Santa Clara Co. July 7; bush lupine netted 3 Peromyscus maniculatus and 2 Mus; 16 set on same hill (exposed slope) caught 2 Peromyscus m., 1 Reithrus rodontomyx, and 1 Microtus. 21 along small stream (1 ft. wide, 1 in. deep) in dog fennel, daisy and yellow button plant caught nothing; 75 in marshy area mentioned above caught 2 Sorex, 15 Microtus, 4 Reithrodontomys. Feathers set 85 traps in the marsh to get: 2 Mus, 2 Reithros, 14 Microtus, and 6 Peromyscus. He also caught 1 Norway rat and 3 brush rabbits in 5 steel sets. In many places in the Santa Cruz Mountains we saw large areas (entire mountainsides extending for miles) grown to chaparral (Adenostima, Baccharis, Ceanothus, etc.) which we thought should be covered with coniferous forests. In many instances this chaparral evidently was the "invasive" after the area had been burned over, or logged first then burned over; dead spars could be seen. The succession of animal life accompany- ing this should be kept in mind.