_Emeus gravipes_ Lydekker, Cat. Foss. Birds Brit. Mus., p. 298 (1891) Nos. A95, on p. 299, to 47444d, on p. 300. _Dinornis gravis_ (portion) Owen, Trans. Zool. Soc. VIII, p. 361 (1872). _Euryapteryx gravis_ Haast, Ibis 1874, p. 213. The present species is smaller than _E. crassus_ and has the tarso-metatarsus relatively wider. Length, 198 mm. = 7.8 inches; width at middle of shaft, 51 mm. = 2 inches. Habitat: Middle Island, New Zealand. EMEUS HAASTI NOM. NOV. _Emeus_ species [Beta], Parker, Trans. Zool. Soc. XIII p. 379 (1895). _Emeus gravipes_ Lydekker, Cat. Foss. Birds Brit. Mus. p. 301 Nos. 32017, 32016, a-e and c to 32044 e on p. 307 (1891). Sir J. von Haast united this form with _Dinornis gravis_, and the skull which is the type of _E. haasti_ is put on a skeleton of _D. gravis_ in the Canterbury Museum. The measurements of this species are much smaller than those of the other species. Habitat: Middle Island, New Zealand. {211} EMEUS PARKERI NOM. NOV. _Emeus_ species [Gamma], Parker, Trans. Zool. Soc. XIII, p. 380 (1895). This species is at once distinguished from the other species of the genus by having right-angled orbits. The type is a skull from Hamilton Swamp, named _Euryapteryx gravis_, by Prof. Hutton, in the Otago Museum. Habitat: Middle Island, New Zealand. EMEUS EXILIS (HUTT.) _Dinornis didiformis_ Owen, Trans. Zool. Soc. III, pl. 24 (1846), part. _Euryapteryx exilis_ Hutton, Trans. N.Z. Inst. XXIX, p. 552, pl. XLVIII, Fig. C (1897). Differs from _E. crassus_ in the tibia being more convex on the anterior surface. The skull, among other differences, has a very slight frontal rising to the cranial roof, as opposed to the very conspicuous one in the remaining species. The type is a nearly complete skeleton in the Wanganui Museum. For full description see Hutton, l.c. Habitat: North Island, New Zealand. {213} PACHYORNIS LYDEKKER.