C. Koford 9 specimen Catalogue April 29, 1951 Livine, 21 mi. NE Tarata, D=15300', Opto. Tacna, Peru. 1011 male test. 30x18 abd. Lagidium 630-245-92-69-1600gms. shot at base slide of large boulders. April 30, 1951 kielasmus 1012 sandy grit slope under tela bush. no emb. darwini? Phyllotis balvanensis 175-95-25-24-22gms. 1013 female ut. horn 11x1/2 On soil (sandy) next to rock, tela, yurita, or gentle slope. darwini? 1014 male test. 3x2 Phyllotis balvanensis ? 167-83-26-22-wt. 22 sandy grit slope, next to yurita + clump grass. 1015 male test. 9x6 A. andinus 145-50-22-16-25gms. on fine soil under boulder of rock slide, 100yds. from base; small lumber near. 1016 female no emb. ut.wall thick, issue. tract saved nipples 3mm; lact. tigs. under edge boulder; rocky sandy grit slope, some yurita. Phyllotis darwini ? 223-111-28-26-431/2gms. May 1, 1951 1017. female vag. imp. nip. 2mm. no emb. ut.horn 25x3 tract saved sandy On soil, fast rock slide, base yurita covered rock. Phyllotis darwini 218-111-27-26-45gms. May 2, 1951 17 miles S. Mazocruz, 13500 ft., Dpto. Puno, Peru. 1018 male test. 21/2x11/2 AKodon berlepschii 154-66-21-16-23g. flat rockless tela & bunch grass area at mouth two holes. May 3, 1951 1019 male test. 2x3 Phyllotis sublimis 123-41-20-20-19g. under boulder near bunch grass on slope; 50yds. from stream. 1020 male test. 7x4 AKodon jelskii ochrotic 180-69-27-20-49gm. 20' from stream at mouth crevice in cliff of red rock; dark mouse. vag. (imp.); lacteal tissue 1021 female no emb. tr. saved Phyllotis sublimis 177-53-22-25-55g. same place as 1018, at night.