Note 80 — Chapter IV
Reading edition
Gerstaecker has found in the two first abdominal segments of Corydia carunculigera (Blattariæ) pleural appendages, which are hollow and capable of protrusion. They have no relation to the stigmata, which are present in the same segments, and their function is quite unknown. See Arch. f. Naturg., 1861, p. 107.