The food consists of insects of various kinds.
The sexes are so precisely alike that dissection must be resorted to to distinguish them.
All the upper surface olive-brown; wings and tail brown, margined with olive-brown; all the under surface tawny or deep buff, fading into white on the throat; under mandible fleshy white, remainder of the bill and the legs olive horn-colour; irides brown.
The figure is of the natural size.
ACROCEPHALUS LONGIROSTRIS: Gould.
J. Gould and H. C. Richter del et lith. Hullmandel & Walton Imp.
ACROCEPHALUS LONGIROSTRIS, Gould.
Long-billed Sedge-Warbler.
Calamoherpe longirostris, Gould in Proc. of Zool. Soc., Part XIII. p. 20.
Gooȑ-jee-gooȑ-jee, Aborigines of the lowland districts of Western Australia.
The present bird, which I have designated longirostris, is the largest of the two species of Acrocephalus known to inhabit Australia.