Cogswell 1949 Lepus californicus Sep.6-9 (2 1/2 mi. NNW) Red Mtn.; 5400 ft., 14 mi. S Hayfork, Trinity Co, Calif. on 3 days out of 4, at varying hours in the a.m., I jumped a jack Rabbit from the open shrubland on the border of the small barren area on the ridge above our camp. The shrubs from under the edge of which I ran were usually dense Ceanothus, or Brewer oak -- in an area where about 30-70 % of the ground was covered with similar shrubs of these kinds or of arctostaphylos patula?. When that frightened into running the Jack Rabbit dodged between several of the bushes & eluded me; at no time did I see it go across the bare open area on the highest part of the ridge.