Order Rodentia (Part 3) Author James H. Honacki Author Kenneth E. Kinman Author James W. Koeppl text 1982 Alien Press, Inc. & The Association of Systematics Collections Lawrence, Kansas, USA Editor James H. Honacki Editor Kenneth E. Kinman Editor James W. Koeppl Mammal Species of the World (1 st Edition) 392 476 book chapter http://doi.org/10.5281/zenodo.7353031 f291a924-691f-4f06-bc89-3dc2421c2bed 0-89327-235-3 7353031 Sigmodon alstoni (Thomas, 1881) . Proc. Zool. Soc. Lond., 1880:691 . TYPE LOCALITY: Venezuela , Sucre , Cumana Dist . DISTRIBUTION: N. and E. Venezuela ; S. Guyana ; Surinam ; N. Brazil . COMMENT: Included in hispidus by Hershkovitz, 1955, Fieldiana Zool., 37:639-673; but considered a distinct species by Hershkovitz, 1966, Z. Saugetierk., 31: 129, Handley, 1976 , Brigham Young Univ. Sci. Bull. Biol. Ser., 20(5):53, and Husson, 1978:427-429 . Included in genus Sigmomys by Handley, 1976 , Brigham Young Univ. Sci. Bull. Biol. Ser., 20(5):53; but see Husson, 1978:427-429 , and Hershkovitz, 1966, Z. Saugetierk., 31: 129, who considered Sigmomys a subgenus.