[51]

Blowfly, etc. p. 376.

[52]

C. R. Ac. Sci., cxv. 1892, p. 61, and Bull. Sci. France Belgique, xxv. 1893, p. 18.

[53]

Compt. rend. Ac. Paris, cii. 1886, p. 1339.

[54]

See Newport, Phil. Trans. 1837, and Lubbock Linn. Trans. xxiii. 1860, p. 29, etc.

[55]

Zeitschr. wiss. Zool. xxvi. 1876, p. 137.