C. Koford 1952 57 Specimens October 9 Toconce, 14000', 60 mi. ENE Calama, Prov. Antofagasta, Chile 1660 ♂ test. 9x7 Ctenomys fulvus 301-92-44-9, 285gms. October 10 1661 ♂ t. 8x5 Eligmodontia punae puerulus 162-80-25-18, 20gm. 1662 ♂ t. 7x5 " " 169-82-25-18, 23gm. 1661-2 Mouths burrows in soil at bare green tola bush, mod. sandy. back broken 1663 ♂ t. 9x7 Phyllotis sublimis 155-48-23-20, 40gm. Loose sand among clumps spiny puma grass October 11 Phyllotis sublimis 1664 ♀ emb. 2RH 1LH, 22mm C-R 154-46-23-23, 54gms. Bare green tola near bunch grass, rocks, or mod. sandy loose soil. October 13 2 emb. RH 90 mm. tot. length 1665 ♀ v.imp., Ctenomys fulvus 284-86-40-9, 225gms. nip.3, Caught Oct. 10; stayed in captivity. October 24 Cerro Tatio, 14500', 50 mi. E Calama, Prov. Antof, Chile 1666 ♀ lst. ov. 15 Tremotis pentlandii no fat 1250gms. Several type worms in each. Welling or near 16:30 a.m. with 110gms. ad.♀. Stomach empty. skull of other sandy mouse? October 26 Tatio Geysers, 4000', 57 mi. E by N. Calama, Prov. Antofagasta, Chile 1667 Liolaemus ? 1668 Frog 1669 Frog 1668-9, edge lukewarm swift streams 2-5/ yd. three study. October 27 daurunui 1670 ♂ t. 8x6 Phyllotis (sp. ?) 236-117-26-24, 51gms. Under rock on slope near P. daurunii; bunch grass near. October 28 Cerro Tatio, 4000', 50 mi. E Calama, skel. 1671 ♂ t.35x15 Pterocnemis pennata ,42lbs. (saved) with 2 others on rocky rampa of 5-10% slope. Tapeworms in small intestine. 2 cascaes 30' long x 3" wide.