(1255) Zosterops aureiventris mesoxantha.
The Karen White-Eye.
Zosterops mesoxantha Salvadori, Ann. Mus. Civ. Genova, vii, 1889, p. 396 (Karen Hills). Zosterops aureiventris. Blanf. & Oates, i, p. 215 (part).
Vernacular names. None recorded.
Description. A trifle darker than the preceding bird and with still paler grey flanks. It appears also to have less yellow on the abdomen.
Colours of soft parts as in the other forms. Measurements as in the preceding race.
Distribution. The mountains of Central and Eastern Burma from Karenni to the extreme South and also the mountains of Southern Siam South to Selangor.
Messrs. Robinson and Kloss have pointed out that the apparent overlapping in area of the two supposed forms of aureiventris is due to one being a bird of the lowlands and sea-coasts and the other a bird of mountains of some height. If this is remembered it seems possible to separate the two, though not very satisfactorily. Z. tahanensis becomes, however, a synonym of this form.
Nidification. Nothing recorded.
Habits. This seems to be a form of aureiventris restricted to the higher mountains. The series collected from Karenni were all obtained at 4,700 feet upwards. Beyond the fact that they keep to heavy forest nothing has been recorded as to their Habits.