CATALOGUE 



BIRDS. 



Order II. PASSERIFORMES 



(Cat. B. vol. iii. p. 1). 



Suborder I. PASSERES 



(Cat. B. vol. iii. p. 1). 



Division II. MESOMYODI. 



Intrinsic muscles of the voice-organ affixed at or 



near the middle of the bronchial semi-rings. 



(Of Garrod, P. Z. S. 1876, pp. 507, 517, and Sharpe, Cat. B. 

 vol. iii. p. 3.) 



Scheme of Mesomyodian Passeres. 



Subdiv. 1. — Lower end of trachea not modi- 

 fied ; syrinx as in the Oseines, but with 

 a lesser number of singing-muscles .... 0LIG0MY0D2E 



[(Vol. xiv.). 

 Subdiv. 2. — Lower end of trachea modified 



to form an organ of voice TRACHEOPHONJE 



[(Vol. xv.). 



VOL. XXV. B 



