d. Occurring in the abdomen.

d1. In the two first abdominal segments.

Corydia carunculigera ♂ and ♀.

d2. Alluring (?) organs situated on the dorsal side of the abdomen, in the 6th, or 6th and 7th, abdominal segment.

Periplaneta americana ♂, P. orientalis (nymph), P. decorata ♂ (nymph), Ectoblatta germanica ♂, Ectobia lapponica ♂, Phyllodromia ♂, Aphlebia bivittata ♂, Platyzosteria ingens (on seventh segment).

e. At the end of the body.

Colænis julia ♀ (F. Müller), Heliconius apseudes (F. Müller).

LITERATURE ON DEFENSIVE OR REPUGNATORIAL GLANDS

Aldrovandus, U. De animalibus insectis libri septem cum singulorum iconibus ad vivum expressis. (Denuo impress: Bonon. apud Clementem Ferronium, 1638, p. 273. The first edition was in 1602.)

Moufet, T. Insectorum sive minimorum animalium theatrum, etc. London, 1634, pp. 185, 186.