 The bat has a rounded head with narrow, pointed ears, and unusually large feet.The membranes of the wings attach to the toes at their hindmost part, while the membrane between the legs is partially supported by a long calcar that actually extends beyond its edge to end in a small rounded lump.The silver-tipped myotis is one of the most widespread members of its genus, being known from every country of South America except Chile and French Guiana.