Pupa, [7]

Pygidium, [46], [50]

Rat-fleas, [104], [105]

—— and man, [101]

Rats and mice, fleas of, [97]

Rectal glands, [57]

Rectum, [57]

Rectum, discharge of blood from, [44]

Reptile, flea on a, [15]

Rock-pipit, [11]