J.K. Pearson 1951 Dec. 12, 1951 Lago Viscacha, 14,900 ft., Dept. y Cnoquegua, Peru. 687 Chrocomys jelokii preg. 2 left; int. Burp 5x4 ♀ 185 x 88 x 27 x 19 688 Chrocomys jelokii b.m. Testis 176 x 76 x 25 x 18 ♂ darwini chilensis 689 Phyllotis ^ 2 m. testis, 231 x 122 x 27 x 29 ♂ Dec. 15, 1951 Rio Santa Rosa, 14,400 ft., Dept. y Puno, Peru. 690 Chrocomys jelokii last.; no embro 163 x 69 x 24 x 18 ♀ 691 Phyllotis darwini Testis 10m 225 x 114 x 20 x 25 ♂ chilensis Dec. 16, 1951 Rio Santa Rosa, 13,300 ft., Dept. y Puno, Peru 692 Bolomya berlepochii (2) testis; 10m. 171 x 77 x 21 x 15 ♂ 693 Phyllotis sublimis Ochrocomys molinae (2) 133 x 47 x 20 x 20 ♀ vaginal film in situ uterus str., no embro. Dec. 17, 1951 Pampa Qneullecota, 13,200 ft., Dept. y Puno, Peru. 694 Ctenomys fennanus vagina closed, nipples 2m long. 292 x 86 x 37 x 8 ♀ Preg. 2 left, 3 rt. Burp 10m. Embryos invisible. Capra hutea 2 left, 3 rt., female. Dec. 21, 1951. Lago Salinas, 14,100 ft., Dept. y Arugua, Peru 695 Scleromys durilla Testis 3.5mm. 94 x 35 x 17 x 14 ♂ Dec. 22, 1951 Tkm. E. y Arequipa, 8800ft., Dept. y Arequipa, Peru. 696 Phyllotis darwini supertis testis, 9m 30° ♂ 718 x 113 x 24 x 23 ♂ 697 Phyllotis darwini supertistestis, 9.5m 40gr. 221 x 116 x 25 x 25 ♂ 698 Phyllotis darwini supertis (act. no embro 42gr. 227 x 116 x 25 x 24 ♀