Ptilorrhoa caerulescens Temminck, 1836

Male nominate race has entire body blue, except for white chin to upper breast bordered by black band from lores and broadly through and below orbit to neck side and across breast; remiges dark grey- black; inner primaries with bluish tinge on outer webs; secondaries entirely blueon outer webs; tail dusky brown, washed with blue, strongly so on outer webs; iris dark brown; bill and legs black. Female is similar to male but somewhat smaller, with white of throat extending to lower edge of eye. Juvenile is like female, but underparts browner. Race neumanni male is inseparable from nominate, female similar but black band from lores through ear- coverts extends below orbit; nigricrissus is similar, but undertail- coverts partly black, female with thin white supercilium.