240 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 surrounded with strong hairs. Mus- 

 cicapada. 



(1.) Ridge of the upper mandible straight. 

 Ridge indistinct. 



64. TYIIANNDS. The bill is long and very strong. La- 

 nius pelanqiM. 



Ridge acute or distinct. 



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

 phuratus. 



66. MUSCICAPA. Flycatcher. Bill short, with straigh 

 sides. 



Ridge of the upper mandible bent. 



67. GYMNOCEPHALUS. Face in part bare of feathers. 

 Corvus calvus. 



68. CEPHALOPTERUS. Feathers at the base of the bill 

 forming an elevated tuft. C. ornatus. 



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

 tion, than the preceding. Arnpelisidce. 



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 Hat 

 horny substance, resembling red sealing-wax. Ampdu 

 Garmlns. 



