The spots on the inner secondaries, in the first plumage, appear to be much larger in the case of _A. minus_ than with _A. narina_, for an immature female specimen of the latter shows only rounded spots on the outer webs not exceeding 5.5 mm. in diameter, while the additional buffy speckling is practically absent. This trogon was found by us in the Ituri forest, from the Nepoko River south to Avakubi and westward to Banalia, but its range is certainly wider than this. It is a species perfectly distinct from _Apaloderma narina_, but both occur in the same forests, though the latter was also to be heard at times in areas of tall second-growth, whereas _A. minus_ seemed never to leave the primitive uncut forest, and was extremely shy and difficult to observe. These two trogons may easily be recognized by their voices, the common note of _A. narina_ being a double, dove-like "cu-coo," which is repeated slowly for several seconds, starting faintly but increasing in strength, and accompanied by a slight wagging of the tail. That of _A. minus_ is a series of longer, more mournful sounds that might be represented by the word "kwaw." These calls are given by the males. As compared with the measurements given in Prof. Reichenow's "Voegel Afrikas" and the British Museum Catalogue, our specimens of _Apaloderma narina_ from the Ituri District seem rather small, and may belong to the race _aequatoriale_ of Dr. Sharpe. A series of 12 adult males measures: bill (culmen from base) 18.5-21 mm.; wing 117.5-128; tail 146.5-166. The green borders of the secondaries are never very well marked, and sometimes virtually absent. Seven females from the same region measure: Bill, 18.5-21; Wing 117.5-129; Tail, 149-169. One male collected in the Uele District, in a small forest tract between Faradje and Aba, is strikingly larger; wing, 134; tail 194. This example is probably referable to _A. n. narina_. =Ceriocleptes= gen. nov. (Indicatoridae). Resembling _Indicator_ in its bill and general form, save for the tail, which is composed of 12 quills, the two middle pairs of nearly equal length, somewhat pointed and curved strongly outwards, the next pair considerably shorter, but also pointed and slightly curved; while the fourth, fifth and sixth are straight, greatly narrowed, and stiffened, becoming successively shorter, so that the outermost pair is not half so long as the median. The tail-coverts are unusually long, those below as long as the longest rectrices, and projecting in the fork of the tail. =Ceriocleptes xenurus= sp. nov. Description of type, collector's No. 5628, Congo Exp. A. M. N. H. [Male] ad., Avakubi, Ituri District, Belgian Congo. Apr. 17, 1914.