Only part of the very extensive entomological collections made in New Guinea during various expeditions by Dutch scientists has so far been studied, but this already yielded many new species. A first superficial survey of the Orthoptera in these collections provided a number of specimens of a species of Phyllophora, which proved distinct from any of the forms described before. As I believe the species to be new to science, it is described here as Phyllophora boschmai nov. spec., and named in honour of Professor Dr. H. Boschma, who for many years was my teacher and director at the Rijksmuseum van Natuurlijke Historie, and to whom I owe many thanks for his practical advices during my studies. The greater part of the specimens mentioned here have been collected by Professor Boschma himself in his function of zoologist of the 1939-1940 expedition of the Koninklijk Nederlandsch Aardrijkskundig Genootschap (Royal Netherlands Geographic Society) to Central New Guinea. All the material dealt with was obtained in the Wissel Lakes area in the Central Mountains range of New Guinea (roughly at 136º 20' E 3º 55' S); the localities are indicated on the map in Dr. Boschma's (1943, p. 506) general account of his activities as a zoologist of the just mentioned expedition. Phyllophora boschmai nov. spec. Material. — 10 ♀♀ and 13 ♂ ♂, Paniai Lake, 22 August-15 November 1939, H. Boschma; 1 ♀ and 1 ♂, Bivak Araboe, 1-5 October 1939, H. Boschma; 3 ♀♀ and 1 ♂, Enarotali, Paniai Lake, 13 July 1952, W. J. Roosdorp; 1 ♀, Enarotali, Paniai Lake, 5 January 1955, L. D. Brongersma c.s. (all syntypes).