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Fig. 456u.—Types of birds’ feet. .4, reticulate tarsus of black-bellied plover; 
B, scutellate tarsus of meadow-lark; C, booted tarsus of robin; D, cursorial foot 
of ostrich; E, rasorial foot of prairie-chicken; F, semi-palmated toot of peep: G, 
totipalmate foot of wood-duck; H, of cormorant; J, tarso-metatarsus of penguin. 
[To face page 521.] 
