Recently published Ornithological Works. 327 



Mac rocli ires ; Fasc. III. Macrocliires, Tracheophonse, OligomyodEe ; 

 Fasc. IV. Tyrannidse, Hinindinidse, Ampelidne, Paramythiidse, and Musci- 

 oapidaj. Bruxelles, 1900. Pp. 81-288.] 



In 1890 (Ibis, 1900, p. 381) we recorded the- issue 

 of the first part of this useful Manual. Since that date 

 three more ' fasciculae ' have been issued, the contents of 

 which are indicated in the titles given above. 



The following species are figured in these parts : — PI. ii. 

 Heads of Melanerpes cruetitatus and M. hargitti (sp. nov.) 

 and oi Hapalo derma rufiventre; PI. iii. Rhinopomastes cabanisi, 

 Sctjtalupus analis, and Hypoaiemis navioides ; PI, iv.* 

 Grallaria gigantea and Myrmotheriila brevicauda ; PI. v. 

 Thamnophilus torquatus and Dendrocolaptes sancti-thomce ; 

 PI. vi. Picolaptes albo-Vmentus and Dendrornis guttata. 



49. Finn on the Tracheal Bulb of Ducks. 



[Note on the Structure and Function of the Traclieal Rulb in male 

 Aiiatidxe. By F. Finn, J^.A., F.Z.S., Deputy Superintendent of the 

 Indian Museum. J. A. S. B. Ixix. pt. ii. p. 147, 1900.] 



The subject of this paper is one of considerable interest, 

 and Mr. Finn is doing us a great service in extending 

 our knowledge, as regards the condition of the trachea, to 

 species not heretofore examined. These are Nettopus coroman- 

 delianus, where there is no bulb ; jEx yalericulata, Casarca 

 rntila, and the hybrid Cairina moschata x Anas hoscas, where 

 that structure occurs to a greater or less extent. A table of 

 the sounds emitted by Ducks and Drakes of various species is 

 added, to show how far the voice is modified by the formation. 

 Mr. Finn thinks that it will be proved that the male cannot 

 ntter quacks or croaks similar to those of the female. 



50. Finn on the Cormorant of the Crozettes. 



[On the Form of Cormorant inhabiting the Crozette Islands. By 

 F. Finn, B.A., F.Z.S., Deputy Superintendent of the Indian Museum. 

 J. A. S. B. Ixix. pt. ii. p. 143, 1900.] 



It is here pointed out that a specimen of a Cormorant 

 from the Crozettes in the Calcutta Museum (originally 



* Erroneously numbered " PI. vi." 



