A faunal survey in Kingu Pira (south Tanzania), with new karyotypes of several small mammals and the description of a new Murid species (Mammalia, Rodentia) Denys, Christiane Lalis, Aude Lecompte, Émilie Cornette, Raphaël Moulin, Sibyle Makundi, Rhodes H. Machang, Robert S. Volobouev, Vitaly Aniskine, Vladimir M. Zoosystema 2011 2011-03-31 33 1 5 47 Thomas, 1909 Thomas 1909 [862,1101,1483,1510] Mammalia Muridae Beamys Animalia Rodentia 27 32 Chordata genus  17 16 15 14 WZYG 13 12 11 10 242628303234 LGT 6.0 5.5 5.0 13 LS 4.5 4.0 3.5 3.0 242628303234 LGT  FIG. 15. — Scatterplots of skull proportions for different  Grammomys Thomas, 1915: A, WZYG versus LGT (in millimetres); B, LS13 versus LGT. Abbreviations: see Material and methods. Symbol: T, holotype. Dollman, 1914 holotypeis from Mulanjein Malawi. Dieterlen (1979)described an old skull collected in Moshi, Tanzaniaand attributed it to  B. hindeiclaiming it is the earliest specimen of the genus  Beamysdescribed in 1909 by Thomas. Classical determination keys emphasize a difference in size and especially in hindfoot length to separate between the two species. New discoveries of  B. hindeiin coastal Kenyaas well as in south Tanzaniaby Fitzgibbon et al. (1995)suggest that there is a clinal variation in size from north to south coastal populations. Animals from lower latitudes appeared to be larger than those from near the Equator but the sample was too small to be statistically significant.