The upper parts are glossy dark gray, slightly suffused with brown. The underparts are pale cream and are sharply demarcated from the dark dorsum. The tail is sharply bicolored, being dark grayish brown above and white below. The upper surfaces of the feet are mostly white. The ears are small and scantily haired.
Females have eight mammae.
Srilankamys occurs in mountain forests and is considered to be terrestrial. The type specimen was collected at an elevation of about 1,800 meters. The Johns Hopkins University Press. All rights reserved. This document may be used, with this notice included, for noncommercial purposes within a purchasing institution .