348 



MR. W. A. FORBES ON THE TRACHEA OF [Apr. 4, 



' Challenger,' and kindiy 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'". 

 All are convoluted, though that of the female specimen is least so, 

 and those of the two males vary sliglitly in the amount of convo- 

 lution. 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 trans- 

 verse line drawn through the centre of the coil. Of the three ' Chal- 

 lenger ' birds, one, a female ^ has n trachea with a single curved 

 loop, like Pavesi's fig. 8, whilst in the two others the trachea is 



Trachea of Manncodia 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 MS. 

 in my possession) in his work on Cranes : — 



' Lomloii, 1881, pp. 87, 88. 



^ One of the speciiueus referred to in Mr. Murniy's notes, cf. 'Voyage of 

 H.M.S. Challongei-,' Report on the Birds, p. 87. " 



