Pearson 1988 Catalog 43 km SSW Barilello, 1030 m, Rio negro, Argentina, (caron road from the Sallaracoda grid) April 22 Shell only 7444 ♀ Ctenomyz boigii 248 × 76 × 37 174 g, loose in abdominal cavity Shell only 7445 ♀ " " 245 × 70 × 35 155 g. Shell only 7446 ♂ " " Testa 12 mm pale, epidermal tube visible, SV 20 mm 248 × 75 × 36 215 g. very thin April 23 formula 7447 ♀ Chelomys macrocephalus 186 × 57 × 26 × 17 58 g, Test 6 mm formula 7448 ♀ Ctenomyz microphus 250 × 112 × 30 × 22 66 g. Test 4 Rio Castatavera, 890 m, Rio negro April 28 formula 7449 ♀ chelomys 208 × 62 × 27 × 18 79 g. April 29 formula 7450 ♀ Ctenomyz 247 × 113 × 29 × 22 60 g. Refugio Neumeyer, 13 km SSE Barilello, Rio negro May 3 formula 7451 ♂ Chelomys 176 × 55 × 26 × 17 52 g. Testa 4 mm formula 7452 ♀ Ctenomyz 208 × 90 × 28 × 19 × 55 g, testa 4 mm. formula 7453 ♀ Ctenomyz longicollis 175 × 100 × 26 × 15 15 g. scallifo 12 km W Barilello, Rio negro May 5 7454 ♂ Akodon sp. ? 170 × 80 × 24 × 16 22 g, testa 4 mm, flesh-colored, SV 3 7455 ♂ " " ? 165 × 76 × 23 × 16 20 g. testa 4 mm, flesh-colored SV 3 formula 7456 ♀ " " ? 157 × 76 × 23 × 16 17 g, testa 3 mm