362 l^r. (-'has. Cliilton on tt neio Species of the Kedah : Kedah Peak, 3200 ft. {Dr. A. T. Stanton), 1 ? . Ill spite of its obviously close relationship with O. nebulosus, de Meij., there are a uumber of small ditiereuces in venation in which the new species bears a greater resemblance to Cladura. The characters common to both species of Oxy~ discus, distinguishing them from Cladura, are the shortness of Sc and the presence of surface-hairs towards the apex of the wing. XL I. — A neio Species of the Amphipodan Genus Hyale from New Zealand. \\y Chas. Chilton, M.A., D.Sf., LL.D., F.L.S., C.M.Z.tS., Professor of Biology, Canterbury College, New Zealand. The genus Hyale is represented in New Zealand by several species, of which, perhaps, the commonest is H. rubra (G. M. Thomson), which is found on all parts of the New Zealand coast, and agrees well with the brief description given by Stebbing in ^ Das Tierreich, Aniphipoda' (p. 572). In November 1915 a number of specimens of Hyale were sent to me by Mr. P. W. Grrenfell from Cuvier Island. Most of these proved to belong to Hyale rubra, but among them there was one that attracted my attention by its peculiar maxillipedes, the terminal joints of which were greatly ex-panded and tiiickly covered with long setae. On examination it proved that this specimen, which was a male, differed from H. rubra in the second gnathopod also, and I am therefore describing it as a new species. Unfortunately I have only the single specimen, but the characters of the maxillipedes and the second gnathopods are so distinctive that it will be easy to recognize it again. It is quite likely that the peculiar development of the maxillipedes is found in the male only, and is to be looked upon as a secondary sexual character, but the female of this species is at present unknown. The following will serve as a description : — Hyale grenfelli, sp. n. (Figs. 1-5.) Specific diagnosis. Male. — In general resembling H. rubra (G. M. Thomson), but differing in the maxillipedes, which have the carpus and propod greatly dilated and thickly covered with long slender hairs, and in the second gnathopod, in wiiich the palm is only slightly oblique, well defined, broad, the margni on both outer and inner sides being deeply
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