[18] Brunner. N. Syst. d. Blattaires, p. 234.
[19] Scudder. Proc. Boston Soc. N.H., Vol. XIX., p. 94.
[20] For example, the Russians often call it Proussaki, the Prussian Cockroach, and believe that their troops brought it home with them after the Seven Years’ War. The native Russian name is Tarakan. In Finland and Sweden the same species is called Torraka, which appears to be a corruption of the Russian word, and confirms the account of Linnæus quoted above.
B. germanica is found in the United States from the Atlantic to the Pacific. It is generally known as the Croton Bug, because in New York it is often met with about the water pipes, which are supplied from the Croton River (Dr. Scudder).
[21] Bell’s Edition, Vol. I., p. 454.
[22] British Museum Catalogue of Blattariæ (1868) and Supplement (1869). It is probable that the number is over-estimated in this catalogue, the same species being occasionally renamed.
[23] Brongniart has just described a Carboniferous Insect which he considers a Thysanuran (Dasyleptus Lucasi), though it has but one anal appendage. See C. R. Soc. Ent., France, 1885.
[24] Hummel, loc. cit.
[25] The use of the term pupa to denote the last stage before the complete assumption of wings in the Cockroach, is liable to mislead. There is no resting-stage at all; wings are developed gradually, and are nearly as conspicuous in the last larval state as in the so-called pupa. There seems no reason for speaking of pupæ in this case.
It is preferable to designate as “nymphs” young and active Insects, immature sexually, but with mouth-parts like those of the adult. See Lubbock, Linn. Trans., 1863, and Eaton, Linn. Trans., 1883.