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.

Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 3), pp. 392-476 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 466, DOI: 10.5281/zenodo.7353031

{"references": ["Handley, C. O., Jr. 1976. Mammals of the Smithsonian Venezuelan Project. Brigham Young University Science Bulletin, Biological Series, 20: 1 - 91.", "Husson, A. M. 1978. The mammals of Suriname. E. J. Brill, Leiden, 569 pp., 160 pls."]}