Pearson 1974 Catalog Pasapa Huenulero, 5 km SW Barilde, Rio negro, argentina Oct. 31 7217 ♂ Ctenomys liquid subcut cap on shoulder, 23g. Savid. 243 x 72 x 32 x 5 198 g. Bladder 5 g. testis (10 mm), SV thin, cyp identified by Dr. Marcelo C. Suarez as Ctenomys serialis (Borck, 1849) 2 km E Estacion Perito Moreno, Rio negro nov. 7 7218 ♀ Reithrodon 143 x 51 x 21 x 27 20.5 g. 43 km SSW Barilde, 1200 m, Rio negro nov. 25 7219 ♀ Auliscomys rippled large, no milk. Vt 2½ mm faint score 257 x 169 x 30 x 20 62½ g. caecum 65 m ovaries no pink CL Rio Castaño Otero, 890 m, 44 km W Barilde, Rio negro nov. 30 7220 ♂ Auliscomys 250 x 110 x 50½ x 21 76 g. Testis 18, SV 15 Refugio Neumann, 1500 m, 13 km SSW Barilde, Rio negro Dec. 3 7221 Ctenomys stomach Brown gloff, caecum large. 153 x 47 x 25 x 16 35 g. Testis 4.5, SV 3 Dec. 4 7222 ♀ " captured Dec. 3, ripples large, milk. 175 x 50 x 25 x 15½ 76 g. Rectum 85g paratymia 5 small 7223 ♂ " 181 x 53 x 26 x 17 85 g. testis 13, SV 16 found 2 km E Estacion Perito Moreno, Rio negro 7224 ♀ Reithrodon Test 8, SV 10 190 x 77 x 31 x 24 50.5 g. fat Vermil pink 1½ mm, mouth flat caught nov. 11 weight 25 g. 7225 ♀ " 188 x 75 x 30.5 x 23 48.5 g. 10 km WSW Comallo, Rio negro Dec. 16 7226 ♀ Reithrodon 225 x 81 x 33 x 26 105 g. 7 fetuses of 27 mm CR 2 incisors 2.22 mm. testis 2 mm 7227 ♂ Ctenomys general 146 x 43 x 24 x - x 36 g. stomach green 210 4 fetuses, 32 mm c-R 7228 Microcavia 187 x 0 x 43 x 17 210 g.