<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Sigmodon (Sigmodon) planifrons Nelson and Goldman 1933</title> <meta content="text/html; charset=UTF-8" http-equiv="content-type"/> </head> <body> <p> <i>Sigmodon (Sigmodon) planifrons</i> Nelson and Goldman 1933</p> <p> <i>Sigmodon (Sigmodon) planifrons</i> Nelson and Goldman 1933, Proc. Biol. Soc. Wash., 46: 197.</p> <p>Type Locality: México, Oaxaca State, Juquila, 5000 ft (1524 m).</p> <p>Vernacular Names: Miahuatlan Cotton Rat.</p> <p> Synonyms: <i>Sigmodon (Sigmodon) minor</i> Goodwin 1955; <i>Sigmodon (Sigmodon) setzeri</i> Goodwin 1959.</p> <p>Distribution: As so far known, limited to Sierra de Miahuatlán, S Oaxaca, México.</p> <p> Discussion: Subgenus <i>Sigmodon</i> (<i>S. hispidus</i> species group?). Described as a species but relegated to a subspecies of <i>S. alleni</i> by Baker (1969). As noted by Nelson and Goldman (1933 <i>b</i>), the diminutive size exhibited by the type series, as well as the material and sympatry later reported by Goodwin (1955 <i>b</i>, 1969), suggests that the form is distinct from <i>S. alleni</i>; renewed study of the Oaxacan taxa named by Goodwin (1955 <i>b</i>) will prove critical to much-needed revision of the <i>S. alleni</i> complex (see discussion in Carleton et al., 1999).</p> </body> </html>