Variation, geographical, [16]

Verjbitski, [88]

Vermipsylla, on Ungulates, [13]

Wings, relics of, [4], [31]

Woodward, Dr, [15]

Xenopsylla cheopis, [11], [89], [102], [104]

Yersin, [84]

Zoological Gardens, fleas in, [16], [66]

CAMBRIDGE: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS