D, cervical vertebrae (9);
E, humeri (sing. humerus); F, radius; G, Ulna;
H, carpus, or wrist I and J, metacarpal bones (8); i, "knuckle" joint;
K, pollex (first digit, or "'thumb"); K2 and K3 second or "index" digit, and next or third digit;
L, pelvis or "ossa innominata" ilium, ischium, and pubes anchylosed;
M, femur; N, tibia; O O, fibula;
P, metatarse, or "tarso-metarsus" (3, sometimes 4 bones);
p, actual "knee" joint; q, "heel," or tibiotarsal joint;
Q, hallux (first or "big" toe), called in ornithology the "hind" toe
R, fourth (or outermost) toe; S S sternum, or breast bone.