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The present paper deals with the gibbons of the genus Hylobates existing in the southern and adjacent region of China. Altogether four species of gibbons are reported. A revision of white-checked gibbon (Hylobates leucogenys) is discussed with a description of three new subspecies. 1. Hylobates leucogenys Ogilby, 1840 This species was named by Ogilby (1840) on the basis of specimens from
The present paper deals with the gibbons of the genus Hylobates existing in the southern and adjacent region of China. Altagether four species of gibbons are reported. A revision of white-checked gibbon (Hylobates leucogenys) is discussed with a description of three new subspecies. 1. Hylobates leucogenys Ogilby, 1840 This species was named by Ogilby (1840) on the basis of specimens from