(466)Spelaeornis longicaudatus sinlumensis.
The Sinlum Wren.
Urocichla sinlumensis Harington, A. M. N. H., ser. 8, ii, p. 246 (1908) (Sinlum, Bhamo Hills).
Vernacular names. None recorded.
Description. Above like S. L. longicaudatus but more fulvous, less orange and with the dark bars better defined, below ashy¬ grey, the feathers with black terminal bars and conspicuous sub-terminal white spots ; centre of throat and upper breast whitish ; under tail-coverts rufous-brown.
Colours of soft parts. " Iris reddish-brown; bill black; legs brownish " (Harington).
Measurements. Wing 48 and 51 mm.; tail 36 to 37 mm.; tarsus 21 mm.; culmen 12 mm. "Total length about 4.1" (104 mm.) (Harington).
Distribution. Sinlum, Bhamo Hills.
Nidification. Nests of this Wren taken by Col. Harington and Mr. F. Grant were just like those of S. I. longicaudatus, that is to say oval-shaped, domed nests made principally with dead leaves and lined with the same papier mache substance which appears to be used by all the birds of this genus. They were placed on the ground in forest, on banks in dense undergrowth. The five eggs sent to me are all quite like those of S. 7. longicaudatus, white eggs well speckled with dark red, but of three eggs in one clutch taken by Col. Harington two were pure white and the third very faintly freckled. Eight eggs average 19.0 X 14.6 mm. and the extremes are 20.7 X 15.6 and 18.1 x 14.1 mm.
May and June seem to be the breeding season and apparently the nests were all found at about 6,000 feet elevation.
Habits. Harington describes this Wren as an inveterate skulker and very hard to obtain though its loud, powerful song may often be heard. It keeps almost entirely to dense forest with thick undergrowth between 5,000 and 8,000 feet.