. Bulletin of the British Ornithologists' Club. Birds. 113 [ Orn. CI. 1986 106(3)] and lacking rufous to any part of the ventral surface, being entirely pale yellowish, darker over the ground of the breast and sides, these parts heavily blotched and streaked with greyish olive or dark olive, heaviest over the breast; flanks almost immaculate olive. Wing-formula differs with 5th primary longest, as opposed to 7th in stictigula. Bill markedly longer, the mandible more strongly notched back from the tip and the maxilla more sharply swept- up terminally, effecting a more retrousse or awl
. Bulletin of the British Ornithologists' Club. Birds. 113 [ Orn. CI. 1986 106(3)] and lacking rufous to any part of the ventral surface, being entirely pale yellowish, darker over the ground of the breast and sides, these parts heavily blotched and streaked with greyish olive or dark olive, heaviest over the breast; flanks almost immaculate olive. Wing-formula differs with 5th primary longest, as opposed to 7th in stictigula. Bill markedly longer, the mandible more strongly notched back from the tip and the maxilla more sharply swept- up terminally, effecting a more retrousse or awl-shaped outline to the bill (Fig. 1). Rictal bristles very short. Lateral aspect of head of adult of the Dappled Mountain Robin Arcanator orostruthus (Vincent). Monotypic, but divisible into 3 races, from north to south as follows: (a) amani (Sclater & Moreau), 1935: Amani, East Usambara Mts, northeastern Tanzania. Paler over upper-parts, wings and tail than nominate; face also paler. Below more strongly yellowish, the pectoral and lateral blotching warmer, less cold greyish olive. Wing of type mm. Known only from the East Usambara Mts. (b) sanjei (Jensen & Stuart), 1982: Mwanihana Forest, Uzungwa Mts, eastern Tanzania. Similar to the nominate race over the upper-parts, wings and tail, but more olive tinged and base of tail dull tawny-olive rather than chestnut. Below, with blotching darker and heavier. Somewhat larger (wing of type mm versus 83 mm in orostruthus) and bill rather heavier. Known only from the Uzungwa Mts. (c) orostruthus (Vincent), 1933: Namuli Mtn, northern Mozambique. Upper-parts darker reddish olive-brown, merging to chestnut over the rump and upper tail-coverts. Wings reddish olive, the primaries paler on the outer vanes. Tail dull vinous chestnut. Venter pale primrose yellow, the breast and side heavily blotched and streaked dark greyish olive; flanks pale olivaceous. Known only from Namuli Mtn. Perhaps as far south as M
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1893
