In two recently arrived consignments of Natural History objects from Simalur and neighbouring islets, brought together by Mr. Edw. Jacobson who since has left this locality, were 3 female Lucanidae belonging to different species and found on the island Simalur. They are: 1'. Odontolabis gracilis Kaup, in v. Harold’s Coleopterologische Hefte, IV (1868), p. 77. — Leuthner, Trans. Zool. Soc. London, XI (1885), p. 438. One female (n°. 3981) from Sinabang, May 1913.