[103] Traité Anat., p. 201, pl. ix., fig. 1.
[104] Phil. Trans., 1834, p. 401, pl. xvi.
[105] Vom Bau des Thierischen Körpers, pp. 203, 262; Taf. z. vergl. Anat., pl. vi., fig. 3.
[106] The stomato-gastric nerves of the Cockroach have been carefully described by Koestler (Zeits. f. wiss. Zool., Bd. XXXIX., p. 592).
[107] “Mem. Acad. Petersb.,” 1835.
[108] “Q. J. Micr. Sci.,” 1879, pp. 340–350, pl. xv., xvi.
[109] “Journ. Quekett Micr. Club,” 1879.
[110] It is to be remarked that unusually large nerves supply the cerci of the Cockroach.
[111] The number in Insects varies from eight to four, but seven is usual; four is the usual number in Crustacea.
[112] “Q. J. Micr. Sci.,” 1885.