Abstract: In Chinese specimens, sexual differences of the height of mental foramen and mandibular body are significant; no signifieant sexual differenee shown in relative height of mental foramen. In Australian specimens, significant sexual differences are shown in the height of mandibular body and relative height of mental foramen. In the height of mandibular body, absolute and relative height of mental foramen no significant difference is shown between these two series. Data are shown in the tables of the Chinese text.

Key words: Osteometry; Mandible; Chinese; Australians