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Show 348 MR. W. A. FORBES ON THE TRACHEA OF [Apr. 4, ' Challenger,' and kindly intrusted to me by the late Sir "Wyville Thomson. The first three are those already mentioned by Mr. Tegetmeier in his appendix to the 'Natural History of the Cranes'1. All are convoluted, though that of the female specimen is least so, and those of the two males vary slightly in the amount of convolution. They very closely resemble that of P. keraudreni figured on p. 68, fig. 2, in the second of Prof. Pavesi's papers already quoted, but have eight instead of nine folds, counting along a transverse line drawn through the centre of the coil. Of the three ' Challenger ' birds, one, a female2, has a trachea with a single curved loop, like Pavesi's fig. 8, whilst in the two others the trachea is Trachea of Manucodia atra. quite straight, with no trace of a curve. One of these is a male, probably young, whilst the other is an adult female, as shown by the oviduct containing an egg nearly ready to be laid. It is clear therefore that in this species, too, the female may sometimes have no tracheal loop at all. As regards the habits of P. gouldi, I reproduce here some extracts from the notes accompanying the receipt of the first three tracheae sent-I believe, by Dr. George Bennett of Sydney-the substance of which Mr. Tegetmeier has already published (from the original M S . in my possession) in his work on Cranes:- 1 London, 1881, pp. 87, 88. 2 One of the specimens referred to in Mr. Murray's notes, cf. ' Yovage of H.M.S. Challenger,' Eeport on the Birds, p. 87. |