[46]

American Naturalist, xx. 1886, pp. 438 and 558.

[47]

Zeitschr. wiss. Zool., xlix. 1890, p. 565.

[48]

See Miall and Denny, Cockroach, p. 158.

[49]

Eisig, Mon. Capitelliden, 1887, p. 781.

[50]

Tr. Linn. Soc. London Zool. xxiii. 1860, p. 29.