The males have yellowish white nuptial pads, darkly colored throat, and a pair of slit-like vocal openings.

[3] Rhacophorus schlegelii breed in underground foam nests: In Japan there is also a nest-making frog which is said to lay its eggs sometimes amongst leaves on bushes or trees.

Awakening from their winter sleep, the frogs crawl along the edges of rice fields and swamps and dig out holes above the water level.

This nest cavity is smoothed inside by the movements of the female and is then, in the night, supplied with a ball of white matter full of air-bubbles.

The foam mass meanwhile gradually becomes liquid, and flowing out through the hole the parents left on leaving the nest, carries the young into the outside water.