Gross anatomical inspectio n of both feet of 50 cadavers of Macacus cyclopsis was done with regard to the distribution and course of the arteries. I. Arteries of the Dorsum of the Foot 1) The dorsum of the foot is supplied by the Aa. dorsales pedis superficialis and profundus which originate from the A. saphena. The A. dorsalis pedis profundus is always the larger of the two. 2) The A. dorsalis pedis superficialis supplies the tibial side of the dorsum of the foot and then runs to the plantar side. Af ter giving off the R. perforans proximalis, it becomes the A. metatar sea dorsalis I which runs to the first toe. There are som e cases in which this artery is very small or absent. 3) The A. dorsalis pedis profund u s is the major artery of the dorsum of the foot. In addition to giving off the R. perforan s proximalis to the sole of the foot, it forms the Aa. me tatarseae dorsales II-IV. The R. perforans proximalis forms on the sole of the foot the Arcus plantaris profundus. The Rr. perforans distalis lateralis from each A. metatarsea dorsalis form the Aa. di gitales plantares communes on the sole of the foot. Usually, both the Aa. metatarseae dorsales III and IV separate from the A. tarsea lateralis, but other additional patterns of origin may be seen. In some cases, they may arise from the plantar artery. The A. dorsalis superficialis accesoria (Nishi) which runs to the lateral edge of the fifth toe was noted in approximately half of the cases.