— 4^^ — 



Litteratur. 



1) Beddard, h. E. — On the structural cha- 

 racters ani classification of the Cuckoos. Proc. Zool. 

 Soc. London, 1885, pag. Ifò8-187. 



2) Beddard, P. C. — The structure and the 

 classification of birds. London 1898. 



3) Fàrbringer, M. — Untersuchungen zur 

 Morphologie und Sjsteinatik der Vogel. 2 Bde, 

 Amsterdam, 1888. 



4) Madeiras:^, Gyula. — Ornithologische Sam- 

 melerg-ebnisse T. Biros im Neu -Guinea. Termeszet. 

 Fuzetek vol. XXII. Buda-Pest. 1899. p. 375-428, 

 (p. 4 11 Gacomantis cas^) 



5) Pycraft, TV. P. — Contribuiton to the 

 osteology of birds. Part VI : Guculiformes. Proc. 

 Zoolog. Soc. London, 1903, vol. I, p. 258-291, 

 PL XXll. 



6) Shufeldt, R. W. — The skeleton in Geo- 

 coccyx. Journal of Anat. and Physiology, vol. XX, 

 London, 188fc>, p. 244-26(3. PI. VII-IX. 



7) Shufeldt, R. W. — The osteology of the 

 Guckoos. Proc. Amer. Phil. Soc. vol. XL, 1901. p. 

 51 ; PI. I-Il. 



