Monodelphis (Mygalodelphys) osgoodi Doutt, 1938 TYPE MATERIAL AND TYPE LOCALITY: CM 5242, the holotype by original designation, consists of the skin and skull of an adult male collected at Incachaca (17.23° S, 65.68° W; 2600 m), Cochabamba department, Bolivia. SYNONYMS: None. DISTRIBUTION: Although specimens alleged to be Monodelphis osgoodi are known from central Peru to central Bolivia (Pine and Handley, 2008: map 43), it is not clear that any, except Bolivian material from Cochabamba department and two specimens from La Paz (all sequenced by Pavan et al., 2014: SI, table 1) are correctly identified (see Remarks). REMARKS: No emended description of Monodelphis osgoodi that mentions all the characters now known to distinguish species in the subgenus Mygalodelphys has been published. As a result, the morphological traits that diagnose this species from its sister taxon, M. peruviana, are poorly documented. The current recognition of M. osgoodi as a valid species is largely based on DNA sequence data (Solari, 2007, 2010; Pavan et al., 2014), an obviously unsatisfactory situation.

Published as part of Voss, Robert S., 2022, An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae), pp. 1-77 in Bulletin of the American Museum of Natural History 2022 (455) on pages 27-28, DOI: 10.1206/0003-0090.455.1.1, http://zenodo.org/record/7161371