. The Ibis . wellshown in the olourcd plates in the Zoology of the ^Erebusand Terror. They are also correctly described by G. , as follows :— A. forsteri. A. pennanti. Yellow of the sides of head pass- Yellow of the sides of head deop, ing insensibly iuto white on the and passing at once into deep orange sides of neck, where it is divided on the chest, gradually becoming by a projecting point of the same white on the breast. colour as the back. Black under the throat short, and Black under the throat ending in divided in front in the middle by a a blunt point on the chest. point of the w

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. The Ibis . wellshown in the olourcd plates in the Zoology of the ^Erebusand Terror. They are also correctly described by G. , as follows :— A. forsteri. A. pennanti. Yellow of the sides of head pass- Yellow of the sides of head deop, ing insensibly iuto white on the and passing at once into deep orange sides of neck, where it is divided on the chest, gradually becoming by a projecting point of the same white on the breast. colour as the back. Black under the throat short, and Black under the throat ending in divided in front in the middle by a a blunt point on the chest. point of the white feathers of tlie chest. In the British Museum I have had an opportunity ofmaking a comparison of examples of the skeletons of thesetwo Penguins which fully substantiate the external differ-ences. As will be seen by the figures (1 and 2, p. 332), 332 Mr. P. L. Sclater on the Emperor Penguin. the bill of A. forsteri (fig. 2) is much shorter and broaderi\\^xi ihoX oi A. pennanti (fig. 1). Fig. 1. Fiir.

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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbirds, bookyear1859