“…Bunomys Thomas, 1910Frateromys Sody 1941 TYPE SPECIES: Mus coelestis Thomas, 1896: 248. EMENDED DIAGNOSIS: A genus in Rattini (Lecompte et al, 2008;Aplin and Helgen, 2010) or Rattus Division (Musser and Carleton, 2005) of Murinae within Muridae (as delimited by Musser and Carleton, 2005) that is distinguished from all other described murine genera by the following combination of traits: (1) all species terrestrial in habitus; (2) dorsal pelage covering head and body dense and soft, with guard hairs only slightly longer than overhairs, so coat has an even surface, dorsal coat dark gray, dark bluegray, brownish gray or brown speckled with buff and black; (3) ventral coat soft and dense, whitish gray, dark grayish white, bluegray lightly speckled with white, grayish pale buff to ochraceous gray, demarcation between upperparts and underparts inconspicuous; (4) muzzle elongate in most species, ears rubbery in texture, gray to brown; (5) tail shorter than combined length of head and body, coequal or slightly longer (mean values of LT/LHB range from 79% to 102%), scales small, their annuli overlapping, three short hairs associated with each scale, dorsal surface grayish bown to brown, ventral surface ranges from white (tail is bicolored) to brown (tail is monocolored), a white tip occurs infrequently or is usual, depending upon the species; (6) digits white, dorsal surfaces of carpal and metacarpal regions white to brown, palmar surface adorned with usual number of tubercles found in murines (three interdigitals, a thenar, and a hypothenar), hind foot elongate with full complement of plantar tubercles (four interdigitals, a thenar, and a hypothenar), front claws elongate in three species; (7) two pairs of inguinal teats; (8) testes of adults large relative to length of head and body (22%) or smaller (8%-15%); (9) rostrum of adults elongate and either narrow or broad, interorbital and postorbital margins bounded by low ridges, zygomatic arches flare from sides of skull, posterior zygomatic root situated low on braincase, braincase boxlike (moderately wide and deep), occiput deep, no cranial flexion; (10) zygomatic plate wide or narrow, its anterior margin either barely projecting beyond dorsal maxillary root of zygomatic arch or bowed beyond it, its posterior edge even with the anterior third of the first molar; (11) squamosal intact (not perforated by a subsquamosal foramen); (12) alisphenoid struts absent; (13) incisive foramina long in most species and moderately wide, their posterior margins ending well anterior to front faces of first molars; (14) molar rows diverge slightly posteriorly, bony palate short with its posterior margin even with back faces of third molars or extending slightly beyond them, palatal surface with moderately deep palatine grooves, posterior palatine foramina at level where second and third molar touch; (15) moderately long and narrow sphenopalatine vacuities; (16) wide pterygoid plates with moderately deep pterygoid fossa, small sphenopterygoid openings; (17) m...…”