Hecatesia thyridion fenestra in wing of male.
"Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 2 (of 2)"
George Grey
It is in communication with the middle ear through a small opening in the bone, called the fenestra ovalis, at which place it is separated from the middle ear only by a thin membrane.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.
122 A small opening in the bone at this place is called the fenestra rotunda.
"Physiology and Hygiene for Secondary Schools"
Francis M. Walters, A.M.