Rhynchomys Thomas 1895

Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Muridae, Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore: The Johns Hopkins University Press, pp. 1189-1531 : 1497

Rhynchomys Thomas 1895

Rhynchomys Thomas 1895 , Ann. Mag. Nat. Hist., ser. 6, 16: 160.

Type Species: Rhynchomys soricoides Thomas 1895

Species and subspecies: 2 species:

Species Rhynchomys isarogensis Musser and Freeman 1981

Species Rhynchomys soricoides Thomas 1895

Discussion: Chrotomys Division. Member of the Philippine Old Endemics ( Musser and Heaney, 1992). Considered the only genus in Rhynchomyinae by Thomas (1896), who later included Echiothrix ( Thomas, 1898 b) . Phylogenetic analyses of complete mtDNA cytochrome b sequences for 13 of the 16 genera of endemic Philippine murines place Rhynchomys in a clade containing Apomys , Chrotomys (including Celaenomys ), and Archboldomys ( Jansa and Heaney, 2001) , which is supported by chromosomal data (Rickart and Heaney, 2002). The species of Philippine shrew rats in Rhynchomys , Chrotomys (including Celaenomys ), and Archboldomys are unrelated to the other groups of shrew rats endemic to either Sulawesi or the Australia-New Guinea region ( Musser and Heaney, 1992).