Berylmys Ellerman, 1947

Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, Mammal Species of the World (2 nd Edition), Washington and London: Smithsonian Institution Press, pp. 501-755 : 580

Berylmys Ellerman, 1947 . Proc. Zool. Soc. Lond., 117:261.

TYPE SPECIES: Epimys manipulus Thomas, 1916 .

COMMENTS: Originally proposed as a subgenus of Rattus by Ellerman (1947-1948), but elevated to generic rank in a revision by Musser and Newcomb (1983) which recorded taxonomic history of names and groups associated with Berylmys , and reported past evolutionary histories of species (which have been centered in Indochina), finding that Berylmys was dentally similar to Niviventer , Maxomys , and Leopoldamys , but shared some derived cranial characters with Rattus and that phylogenetic relationships were still unknown. Sperm morphology united Berylmys with Sundamys, Rattus, and Leopoldamys ( Breed and Yong, 1986), but that union was based on a shared spermatozoal form which is probably primitive.