Formerly _Cabalus modestus_ inhabited Great Chatham Island, as Dr. Forbes proved by bones found by himself at Warekauri, but when the species was discovered it existed there no more, though being plentiful on the little outlying island of Mangare. Unfortunately even there it is evidently extinct now, this island being overrun with cats and rats, besides which, according to Buller, the original vegetation has been ruthlessly burnt down for the purpose of sowing grass-seed, as even this bleak little island has been claimed by an enterprising sheep-farmer. Fortunately a good many specimens have been secured by the late W. Hawkins. I have fifteen in my museum, and there are specimens in the British Museum, in Liverpool, and one in Cambridge. Henry Palmer failed to get specimens when he visited Mangare. I have also the egg described and figured in the Ibis by Dr. Forbes. It measures 40 by 21.4 mm., and is creamy white, with faint pale reddish and purplish roundish spots. Habitat: Chatham Islands, east of New Zealand. {129} OCYDROMUS MINOR HAMILTON. _Ocydromus sp._ Hamilton, Trans. N.Z. Inst. XXV, p. 103 (1893). _Ocydromus minor_ Hamilton (nec. Forbes) l.c. This species is nearest allied to _sylvestris_ Scl., which has quite erroneously been placed in the genus _Cabalus_ by Dr. Sharpe; _sylvestris_ will have to form the type of a new genus, but until the skull of _minor_ is known I prefer to leave the latter temporarily in _Ocydromus_. The present species is known from two pelves, seven femora, six tibiae, and five metatarsi, as well as the front portion of a sternum. The measurements all show that _minor_ was a slightly larger form than _sylvestris_, but owing to having a much shorter tibio-tarsus it must have been a much stumpier bird. _Minor._ _Sylvestris._ Pelvis extreme length 65 mm. 62.5 mm. Pelvis extreme breadth 28 " 25 " Femur length 64 " 63 " Tibio-tarsus length 93 " 98 " Tarso-metatarsus length 53 " 51 " Sternum greatest width 24.5 " 24.5 " Habitat: Middle Island, New Zealand. Extinct. OCYDROMUS INSIGNIS FORBES. _Ocydromus insignis_ Forbes, Trans. N.Z. Inst. XXIV, p. 188 (1892--insufficient description). This bird "far exceeded in size any of the existing species of _Ocydromus_." That is all that is published about this bird. Habitat: Middle Island, New Zealand. {131} APHANAPTERYX FRAUENFELD. Bill produced, not cut short, rather curved. The nostrils are exposed and situated at the base of the bill. Halluces of the naked fowl-like legs of moderate length. Front of legs apparently scutellated. Wings abortive, no rectrices apparent. APHANAPTERYX BONASIA SELYS. (PLATE 29.)