90. =Upper= and

91. =Under=, cover the bases of the secondary quills, on the

upper or under surface of the wings, being generally those

referred to as “coverts.”

92. =Greater coverts= (_Tectrices majores_). The longest coverts

projecting beyond the rest, and resting directly upon the bases of

the secondary quills.

93. =Lesser coverts= (_Tectrices minores_). The succession of many

series of small feathers beginning at and covering the anterior

edge of the wing, very small at first and increasing in size

behind.

94. =Middle coverts= (_Tectrices mediæ_). One or more rows of

coverts, intermediate in size as well as position, between the

lesser and greater coverts.

95. =Edge of the wing= (_Campterium_; _Margo carpi_). The small

feathers covering the anterior edge of the wing, both along the

forearm and the hand or first joint, including the bend of the wing.

G. The Legs (_Pedes_).

96. =Legs= (_Pedes_). The posterior pair of limbs inserted in the

pelvis, and used in walking or running.

97. =Thigh= (_Femur_). The basal joint of the leg, its head

articulating with the pelvis. This is generally imbedded in the

flesh, and covered by the skin so as not to be appreciable,

especially in the prepared specimen.

98. =Shin= (_Tibia_). The second or middle joint of the leg,

articulated above to the thigh, below to the tarsus. The upper part,

sometimes the whole, is enveloped in flesh, and covered by skin and

feathers; sometimes the lower extremity is covered by horny plates,

the

A History of North American Birds; Land Birds; Vol. 3 of 3 · 第 304 / 607 题