1^40 PHILOSOPHY OF ZOOLOGY. 



2. Bill depressed. 



Under mandible slightly arched. 



63. Edolius. Ridge of the upper mandible acute. 

 Nostrils covered with feathers. 



Under mandible straight. 



(a.) Bill at the base sun-ounded with strong hairs. J///.9- 

 cicapad(£. 



(1.) Ridge of the upper mandible straight. 

 Ridge indistinct. 



64. Tyr ANNUS. The bill is long and very strong. La- 

 niiiS pelanqua. 



Ridge acute or distinct. 



65. MusciPETA. Bill long, edges bent. Lanius sul- 

 phuratus. 



GQ. MusciCAPA. Flycatcher. Bill short, with straigh 

 sides. 



(2.) Ridge of the upper mandible bent. 



67. Gymnocephalus. Face in part bare of feathers. 

 Corvus calviis. 



68. Cephalopterus. Feathers at the base of the bill 

 forming an elevated tuft. C. ornatu-s. 



{b.) Bill with slender short hairs, and shorter, in propor- 

 tion, than the preceding. Ampel'mdcr. 



Neck bare of feathers. 



69. Gymnoderes. Feathers on the head downy. Cor- 

 vus nudus. 



Neck clothed. 



70. Bombycivoca.- Bohemian chatterer. Shaft of the 

 secondary quill-feathers enlarging at the end into a flat 

 horny substance, resembling red sealing-wax. Ampelis 

 Garriihi.s. 



