CUCULID^. COCCIZIN^. 
323 
Margins of the upper mandible dilated. Tarsus 
naked, lengthened. Tail very long, cuneated. 
Serisomii8,Sw.(/5.285.) 
Bill short, strong : 
the gonys thick, as- 
cending, and angu- 
lated : the culmen 
thickened and arched. 
Tarsus and middle toe 
equal ; lateral toes un- 
equal. Claws short. 
1 eft 
S. cristatus. PI. Enl. 589. 
Zanclostomus, Sw. {Jig.2Si;.d,e) Bill much compressed 
its whole length. Gonys curved downwards. Cul- 
men and upper mandible greatly curved ; the basal 
margin considerably dilated. Wings, tail, and feet 
as in the last genus, but the lateral fore toes are 
nearly equal. Tropics of the Old World. 
Z. Javanicus. Horsf- Java. 
Cocevzus, Vieillot. (Jg. 284:/) Bill moderate, thick- 
ened at the base, compressed. Gonys straight. Basal 
margin of the upper mandible not curved outwards, 
and scarcely rUlated. Tarsus and middle toe of equal 
length. Lateral fore toes unequal. America only. 
C. cayanenais. Enl. 211. 
Ptiloleptus, Sw. Wings very long. BiU intermediate 
in form between Coccyzus and Centropus. Nostrils 
long, linear. Feathers of the head and neck slender 
and^’rigid. Tarsus and middle toe equal; lateral 
toes unequal. All the claws curved, and of equal 
size. Tail of eight feathers. Habits terrestrial. 
South America. 
1’. cristatus. Vicil. Gal. pi. 44.? 
Centropus, Illiger. (/(;. 284. £f) Bill strong. Tarsus 
and middle toe equal. Anterior claws slender, slightly 
curved ; hinder one very long, and nearly straight. 
C. Senegalensis. PI. Enl. 33a. Burchellii. Part5.No. 12S. 
