Lenothrix Miller, 1903 . Proc. U.S. Natl. Mus., 26(1317):466.

TYPE SPECIES: Lenothrix canus Miller, 1903 .

COMMENTS: Chromosomal and biochemical data suggested a close phylogenetic link between Lenothrix and Niviventer (Chan et al., 1979), but derived dental morphology is shared with Pithecheir, and spermatozoal conformation is highly divergent from any Sundaic murine. In sum, Lenothrix is a Sundaic endemic characterized by many primitive external, cranial, dental, and chromosomal features and a few derived dental and spermatozoal traits; despite several claims, its phylogenetic relationships still require illumination (see discussions in Breed and Yong, 1986; Musser, 19816; Musser and Newcomb, 1983).