STRIX NEWTONI NOM. NOV. _Strix sp._ Newton and Gadow, Trans. Zool. Soc. XIII, p. 287 (1893). Messrs. Newton and Gadow give the measurements of, and describe a pair of metatarsi procured with the remains described as _Strix sauzieri_, and state that they do not fit in with that species. For, as they are fully adult bones, it is impossible to attribute their much smaller size to youth. They then add a sentence of which this is the first part: "Unless we assume, what is unlikely, that the Island of Mauritius possessed two different species of _Strix_, we have to conclude that the short pair of metatarsals belonged to a small individual of _Strix sauzieri_, ----." Evidently Messrs. Gadow and Newton, when they wrote this, did not remember the fact that throughout a very large portion of the range of _Strix flammea_, its various geographical races are found side by side with another species of the group of _Strix_, namely, _S. candida_ and _S. capensis_, popularly called "_Grass owls_"; these in nearly every case have the legs considerably longer than in the true _Barn Owls_ (_Strix flammea_ and its races). Therefore I consider it not in the least unlikely that two species of _Strix_ inhabited Mauritius, and that _Strix sauzieri_ was the Mauritian representative of the "Grass Owls," while these two short metatarsals belonged to the representative of the "Barn Owls." I therefore have much pleasure in naming this form after the collector of these bones, the late Sir Edward Newton. Length of tarso-metatarsi, 56 mm. Habitat: Mauritius. {80} STRIX SAUZIERI NEWT. & GAD. _Strix sauzieri_ Newton & Gadow, Trans. Zool. Soc. XIII, p. 286, pl. XXXIII, figs. 11-18 (1893). Messrs. Newton and Gadow describe this species from four metatarsi, three tibiae, and two humeri. They state that the relative length of the tibia to the metatarsus is very constant and characteristic of the various families and genera of owls. In the present instance this comparison indicates a species of _Strix_. The longer and higher cnemial process of the tibia and the shortness of the humerus serve amply to justify the specific separation of this Mauritian owl. The following are the measurements:-- Humerus, length 71 mm. Tibia-tarsus, length 90-93 " Tarso-metatarsus, length 63-66 " Habitat: Mauritius. {81} "CIRCUS HAMILTONI" FORBES. _Circus hamiltoni_ Forbes, Trans. N.Z. Inst. XXIV, p. 186 (1892--no proper description). A very large harrier, much larger than _Circus gouldi_, but not so big as _Harpagornis_. Habitat: Middle Island, New Zealand. "CIRCUS TEAUTEENSIS" FORBES. _Circus teauteensis_ Forbes, Trans. N.Z. Inst. XXIV, p. 186 (1892--no proper description). Another very large harrier from Teaute, which has never yet been properly described. Habitat: Middle Island, New Zealand. {83}