. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. 494 Comparatwe Animal Physiology The tympanic membrane, when located on the body, generally lies in a cleft which forms an external meatus (Figs. 169 and 170), and it may be further protected by the folded wings or the femur of the third leg, or both. On the tibia there are usually two tympanic membranes on opposite sides of the limb. In many genera these membranes are protected by heavy folds which almost completely enclose them (Figs. 169, 170). In Gryllus the membrane is completely exposed, but is associated
. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. 494 Comparatwe Animal Physiology The tympanic membrane, when located on the body, generally lies in a cleft which forms an external meatus (Figs. 169 and 170), and it may be further protected by the folded wings or the femur of the third leg, or both. On the tibia there are usually two tympanic membranes on opposite sides of the limb. In many genera these membranes are protected by heavy folds which almost completely enclose them (Figs. 169, 170). In Gryllus the membrane is completely exposed, but is associated with a very long and prominent hair sensillum, which, on slight contact, evokes an immediate avoiding response of the animal. The chordotonal organs are the sensory elements of the tympanic organ. On the basis of morphological resemblance the term "chordotonal organ" is also applied to similar structures which are not associated with a tympanic. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders
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