C. Koford 12 Specimen Catalogue May 19, 1951 Haciruda Calacala, 13000 ft., 7 mi. SW Pitinga, Dpto. Puno, Peru. 1046 ♀ no emb.; Nip. 3 mm. Phylotis larvatus ? 245-125-28-24-50 gms. alongside rock wall at edge grassy pasture. Repro. tract saved in bottle Benois (with ♀, 54gms +8gms, tot. length 245, test 11x 8) May 18, 1951 11 miles ESE Crucero, to 14000 ft., Dpto. Puno, Peru. 1047 ♀ imm. juv. white belly, cinnamon like throat Thinocorus or biguianus 80 gms. Like ♀998. Two smaller young seen; one swam when alarmed. Common on it fore on open ground short grass plain. Runs much. This one could hardly fly; caught by hand when May 19, 1951 Haciruda Calacala, 13000 ft., 7 mi. SW Pitinga, Dpto. Puno, Peru. 1048 ♂ juv. test. 2½ long. fineness? Notthura agarozie 63 gms. Caught by hand in grass near houses. May 20, 1951 Brown wing, pale superciliary line. 1049 ♂ test. 4x2 Troglodytes musculus pung 13gms. Calle tree in garden, singing loudly. Blackish yellow finish. 1050 ♀ ov. not ent. Spinus atratus 17 gms. This a other same level; has nest with nearly fledged young under eaves of house. "Jilguro" houses. Abatini calle tree in yard: breast naked; blood patch? Brown, whitelined 1051 ♂ test. 10 mm. Metriopelia melanoptera m. 81 gms. 40' yard of houses; common; much fluttering, billing, fighting between. May 25, 1951 8 mi. SSW Limbanis, 14-15000 ft., Dpto. Puno, Peru. 1052 ♀ ct. horn not col.; no emb. or scars Phylotis puter? gublinus ? 154-55-23-22-31 gms. Mouth hole under rock, gentle slope, short grass. Orange chiggers in ears? at elutris. Stomach with contents 7½ gms, grem. 1053 ♂ test. 5x3 Phylotis d.? 205-109-28-26-33 gms. Amargosoliz, brush, grass, on moderate slope. 1054 ♀ nip. 2 mm. var. imp. much last. tissue Phylotis darwinii? 234-115-28-29-52 gms. to born 23x2, 3 white scars R, L. Rock wall on gentle short grass slope, 50' from from pond.