63 Catalogue Hafner, H.S. 1977 Monte Albán, 1850 m., Oaxaca, México. 9 August +tissue vag. open, swollen; uterus swollen 971 ♀ Liomys irroratus 275 - 154 - 30 - 17 = 56g. +tissue testes = 19 mm.; scrotal; SV = 21 mm.; tub. visib. 972 ♂ Liomys irroratus 260 - 137 - 31 - 17 = 61g. +tissue, blood vag. closed; null. 973 ♀ Liomys irroratus 218 - [92] - 31 - 18 = 42g. +tissue, blood testes = 6 mm., ± scrotal; SV = 8 mm. +chrom. 974 ♂ Baionys musculus 132 - 53/56 - 16 - 13 = 11.9g. Boca del Monte, 3.5 km. S, 3 km. E Esperanza, 2450 m., Puebla, México. 13 August +tissue, blood vag. closed; lactating 975 ♀ Thomomys umbrinus 190 - 53 - 26 - 7 = 97g. +tissue, blood vag. closed, emb: 1R-1L = 5 mm.; null. 976 ♀ Thomomys umbrinus 189 - 55 - 27 - 7 = 93g. +tissue, blood vag. closed; null. 977 ♀ Thomomys umbrinus 178 - 54 - 26 - 6 = [no wt] 173 - 50 - 23 - 6 = [no wt] +tissue, blood vag. closed; null. 978 ♀ Thomomys umbrinus 173 - 50 - 23 - 6 = [no wt] +tissue, blood vag. open; null. +chrom. 979 ♀ Thomomys umbrinus 187 - 53 - 26 - 6 = 71g. 14 August +tissue, blood vag. closed; uterus swollen; parous 980 ♀ Thomomys umbrinus 195 - 52 - 26 - 6 = 99g. +tissue, blood vag. open; lactating 981 ♀ Thomomys umbrinus 188 - 52 - 25 - 6 = 87g. +tissue, blood testes = 11 mm.; scrotal; tub. visib. 982 ♂ Thomomys umbrinus 206 - 57 - 27 - 7 = 128g. +tissue, blood vag. closed; null. 983 ♀ Thomomys umbrinus 183 - 50 - 25 - 6 = 81g. 13 km. S, 1 km. W Llera, 450 m., Tamaulipas, México. 15 August +tissue, blood vag. closed; null. +chrom. 984 ♀ Heterogeomys 320 - 85 - 45 - 9 = 565 g. (cont'd)