Habitat: Stephen Island, a small, partly wooded islet, about a square mile in extent, in Cook Strait. It is almost impossible that this bird has only existed on Stephen Island. It must have been overlooked on d'Urville Island or the "mainland," where it probably became extinct--through rats and cats, and similar pests--long ago. {27} MOHO APICALIS GOULD. (PLATE 4A, 1.) _Yellow-tufted Bee-eater_ (non Latham!), Dixon, Voyage round the World, p. 357, plate (1789). _Moho apicalis_ Gould, Proc. Zool. Soc. London 1860, p. 381 (? Hawaii). _Acrulocercus apicalis_ Wilson & Evans, Av. Hawaii, pt. V text and plate (1894). _Moho apicalis_ Rothschild, Avif. Laysan, etc., p. 223 and plate (1900). This rarest species of the Mohos formerly inhabited the island of Oahu, where specimens were obtained in 1837, near Enero, by Herr Deppe. The localities of the specimens figured by Dixon and that of the type of Gould are uncertain, but they must have been obtained on Oahu. Since 1837 we have no further traces of _Moho apicalis_. The only specimens known are those in Berlin, collected by Deppe, two in the British Museum, and one in my Museum at Tring. The latter, which I obtained in exchange from the British Museum, is the one brought home from the Sandwich Islands by Capt. Lord Byron. There is no specimen of _Moho apicalis_ in the Vienna Museum. Habitat: Oahu. {29} CHAETOPTILA SCL. _Chaetoptila_ Sclater, Ibis 1871 p. 358. Dr. Sclater justly proposed a new generic term for the "_Entomyza_" or "_Moho_" _angustipluma_ of former authors. This bird belongs doubtless to the family of _Meliphagidae_ or Honey-eaters, and the genus is sufficiently distinct from all others. There are no fleshy wattles anywhere. The tail is long and strongly graduated; all the rectrices are obliquely pointed at their tips. The plumage of the body is very soft, that of the head, throat and chest almost fluffy; the feathers of the chin, throat and forehead end in hair-like bristles. We know only one species. CHAETOPTILA ANGUSTIPLUMA (PEALE). (PLATE 4A, FIG. 2.) _Entomiza angustipluma_ Peale, U.S. Expl. Exp., Birds p. 147 pl. XL fig. 2 (1848--Hawaii). _Mohoa angustipluma_ Cassin, Proc. Acad. Philad. 1855 p. 440. _Moho angustipluma_ Cassin, U.S. Expl. Exp., Mamm. & Orn. p. 148 pl. XI fig. 1 (1858--Hawaii). Wilson & Evans, Aves. Hawai. pt. II and plate (1891--Hawaii). Rothschild, Avif. Laysan, etc., p. 215 and plate (1900).