1953 xv, 361 p., 465 text figures, 45 plates, folded map, large 4to, original green cloth with gilt title on spine. First volume of this standard work on these flea families. The appendix contains notes relating to the gift of the collection to the British Museum and the will of Mr Rothschild. Also with notes on species not present in the Rothschild collection. Faint stamp on front paste-down and small weak blindstamp on title page leaf, otherwise a very good clean copy.