. Bulletin of the British Ornithologists Club. Jonathan C. Eames 128 Bull. 2002 122(2) Alcippe dubia cui, subsp. nov. Holotype. BMNH registration number , adult male (one enlarged testis) collected at c. 2,200 m asl, Mt Ngoc Linh, 16 May 1996 by NC and prepared as a standard museum skin by JCE (Fig. 10). Paratype. BMNH registration number , adult female collected with the male on the same date by NC and prepared as a standard museum skin by JCE. Diagnosis. The upperparts, including crown, nape and ear-coverts are a slightly darker shade of olive-brown than A. d. genestie
. Bulletin of the British Ornithologists Club. Jonathan C. Eames 128 Bull. 2002 122(2) Alcippe dubia cui, subsp. nov. Holotype. BMNH registration number , adult male (one enlarged testis) collected at c. 2,200 m asl, Mt Ngoc Linh, 16 May 1996 by NC and prepared as a standard museum skin by JCE (Fig. 10). Paratype. BMNH registration number , adult female collected with the male on the same date by NC and prepared as a standard museum skin by JCE. Diagnosis. The upperparts, including crown, nape and ear-coverts are a slightly darker shade of olive-brown than A. d. genestieri. A. d. genestieri from Yunnan andA d. intermedia are slightly lighter brown on the mantle with less olive than birds from north-west Vietnam. The crown colour of A. d. intermedia is slightly more ginger than A. d. genestieri from Yunnan and contrasts with the darker crown of A. d. cui. The underparts of A. d. cui are entirely rich buff with warm chestnut flanks and are a little paler in the centre of the throat and belly. In A. d. genestieri and A d. intermedia the underparts are generally white or off-white and the breast and belly are pale buff admixed with white, whilst the flanks are rich buff. The sides of the neck in A d. cui are not stippled and in this respect it approaches A d. genestieri (Fig. 10). Reference was recently made to the diagnostic features of this subspecies in Robson (2000).. Figure 10. Ventral view of the holotype of Alcippe (brunnea) dubia cui (centre) together with (from left to right) A. d. genestieri BMNH and BMNH , and A. d. intermedia BMNH and BMNH (photograph by J. C. Eames).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists Club. Oxford : Clarendon Press
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