1083. Collocalia innominata.
Collocalia innominata, Hume, S. F. i, p. 294 (1873); ii, pp. 160, 493 ; ix, p. 112; id. Cat. no. 103 ter; Hume & Dav. S. F. vi, p. 49; Oates, B. B. ii, p. 7; Hartert, Cat. B. M. xvi, p. 503. Collocalia maxima, Hume, S. F. iv, p. 223 (descr. nulla).
Coloration. Upper parts blackish brown; crown and nape darker, sometimes forming a distinct cap; wings and tail black with purplish or greenish gloss; rump pale greyish brown, with dark shafts ; lower parts greyish brown, the feathers dark-shafted.
Tarsi feathered in front throughout; bill and feet black ; legs blackish brown (Davison).
Length 5.25; tail 2.2; wing 5.3 ; tarsus .46.
Distribution. Southern Tenasserim and the Andaman Islands. A skin has also been obtained at Selangore in the Malay Peninsula. The nidification is unknown.