Necromys is a genus of South American sigmodontinerodents allied to Akodon. This genus has also been known as Cabreramys or more recently Bolomys. N. urichi has recently been transferred from Akodon.
Wilson, D. E., and D. M. Reeder (Eds.). 2005. Mammal Species of the World, Third Edition. Johns Hopkins University Press, Baltimore, MD. 2 Volumes, 2141 pp.