On a specimen of Peripatus, Guild. from Sumatra

The species of the interesting genus Peripatus, hitherto mentioned, are only found in three parts of the globe, far distant from each other: South America (including the West-Indies)1, the Cape of Good Hope and New-Zealand. Therefore it seems not without interest to me, to give a short description of a specimen, found by my colleague Mr. Ritsema in a bottle with Insects from East-Sumatra, presented to our Museum by Mr. W. E. J. Hekmeyer. The length of the whole animal measures only 25 m.m., its greatest breadth 3 1/2 m.m. The dorsal side of the body is slightly arched, its ventral surface nearly flat; there is a narrow shallow groove running along the middle of the back. The skin presents narrow transverse ridges, passing between the legs from the dorsal to the ventral side and surrounding the whole body; the legs are also faintly ringed. The ridges are beset by a number of warts, which are very developed on the legs. Each wart appears to consist of a truncated cone, bearing on its top a small cylinder, provided with a spine, while the surface of the wart is covered by numerous minute tubercles, which are also scattered over the whole skin between the warts, giving it a net-like appearance.