Duke S. Rogers 1980 Journal 11 September amt. we employed full time to rid gophers from the fields. We took 21 individuals from the fields. We will now drive to Guerrero Negro and rent a hotel room and preserve specimens. Tissue was taken on [illegible] all but three individuals. Five are still alive and will be karyotyped. 2400h. We are still preparing specimens. We also collected many snakes (see RS this date) while right- driving to Guerrero Negro from Vicaros. In addition we collected 2 Depadrury (2 species) 12 September 8:30 h. Turned in after skinning and making skeletal preparations of all material except 4 live gophers. Will karyotype after several hours sleep 8:30 h. Arose and prepared to karyotype. Will try to keep one individual alive and karyotype three. 11:30 h. Preparing to leave Guerrero Negro. We will drive north and stop briefly at two localities with definite gopher activity. 13:30h. Collected one gopher along the Hwy where an arroyo crossed underneath. The traps were set ca. 7m from the road and ca. 12m from some standing water. The water table was just below the burrow system. Part of the system (where the individual was taken) crossed the moist area. The soil contained many