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ALLEN S NATURALIST'S LIBRARY. 



greatly from Cuckoos, and are, moreover, entirely confined to 

 the Ethiopian Region. 



The P^amily Cucnlidcc,, which is co-eqiial in extent with 

 the Sub-order, as defined above, contains six Sub-families, 



x^. F.n. 



Left foot of a Cuckoo [Eitdynamis cyanocehhald), to show the arrange- 

 ment of the plantar tendons. [From the Catalogue of Osteological Speci- 

 mens in the Museum of the Royal College of Surgeons.] F.H., Flexor 

 longus halhuis : F.P., Flexor perforans digitont in 



viz., the True Cuckoos {CucuUnce), found all over the world, 

 the'Lark-heeled Cuckoos {Centropodi?ice), distributed over the 

 tropical portions of the Old World, the Bush Cuckoos (/V/^W- 

 cophce.incE)^ inhabiting the tropics in Africa, India, and the 



