C. Koford 1952 56 Specimens - CHILE Sept. 20 Caritaya, 12000', 75 mi. SE Arica, Prov. Tarapaca, CHILE 1644 v. imp. f nip. 1 Akodon berlyschii 157-60-20-13, para; 1645 f igst. ov. 1/2 Upucerthia rufigalda shell 9/10 opaque slight fat; 32 gms. 1646 m test. 3 Leptasthene Asthenes modesta 16 gms. October Ojos San Pedro, 12500 ft, 55 mi. NE Calama, Prov. Antofagasta 1647 m test. 8x6 Akodon andinus dobichronyx (Hesperomys?) 126-49-19-14, 16 gms. Sand near rocks, 50 yds. from stream, tola mesa, in day. 1648 m t. 6x8 Akodon andinus " 132-50-20-14, 19 gms. v. imp., nip. 1 1649 f para.; Akodon andinus " 140-56-19-15, 17 gms. 1650 m t. 4x3 Hesperomys lepida ducillus tail broken, long 16-37-15-17, 8 gms. 1651 m t. 8x+ Eligmodontia penulus penulens 157-74-23-18, 20 gms. Sank by boulders tola; flat, 50 yds. from stream; same type as on October 3 Toconce, 60 mi. E.-NE Calama, Prov. Antofagasta, Chile 1000 ft. 1652 m t. 9x6 Phyllotis sublimus 156-45-23-24, 46 gms. Sand next to rock near bunch grass, tola; dry tola cottage near. darwini 1653 m t. 8x6 Phyllotis (1145 MK) 231-118-25-26, 50 gms. A 35 gms. m (testis 9x5 ) Nandy ground by boulders. & boxes discarded. Sept. 23 Alta Caminga, 11000', 110 mi. NE Iquique, Prov. Tarapaca, Chile 1654 lizard Liolaemus 1655 mm. October 2 Ojos San Pedro, 1656 mm. Liolaemus m. 1657 Tatio Geysers, 14000', 57 mi. E. by N. Calama, Prov. Antof., C. lizard Liolaemus October 6 Ojos San Pedro (nr.), 14000' 1658 mm. Liolaemus October 8 Toconce, 14000' - 1659 m Abrocoma cinerea 276-79-28-30, 2.03 gms.