[451]

Tr. ent. Soc. London, 1881, p. 360.

[452]

The best general description of the external anatomy of the flea is to be found in Taschenberg, Die Flöhe, 1880. The morphology is better elucidated, though still incompletely, in Wagner's valuable "Aphanipterologische Studien," Horae Soc. ent. Ross. xxiii. 1889, pp. 199-260, 5 plates, and op. cit. xxxi. 1897, pp. 555-594, 3 plates. Cf. also N. C. Rothschild, Nov. Zool. v. 1898, pp. 533-544, 3 plates.

[453]

Howard, Bull. Dep. Agric. Ent. N.S. No. 4, 1896.

[454]

Schimkewitsch, Zool. Anz. vii. 1884, p. 673.

[455]

P. Boston Soc. xxvi. 1894, pp. 312-355.