. The anatomy, physiology, morphology and development of the blow-fly (Calliphora erythrocephala.) A study in the comparative anatomy and morphology of insects; with plates and illustrations executed directly from the drawings of the author;. Blowflies. 6oo THE SENSES AND SENSORY ORGANS. several different end organs, in relation with the tympanic apparatus. Three forms of end organs have been described, of which two, or even all three, are frequently present in the same insect. These special structures are the organ of Miiller, the organ of Siebold, and the supratympanic organ, discovered by G
. The anatomy, physiology, morphology and development of the blow-fly (Calliphora erythrocephala.) A study in the comparative anatomy and morphology of insects; with plates and illustrations executed directly from the drawings of the author;. Blowflies. 6oo THE SENSES AND SENSORY ORGANS. several different end organs, in relation with the tympanic apparatus. Three forms of end organs have been described, of which two, or even all three, are frequently present in the same insect. These special structures are the organ of Miiller, the organ of Siebold, and the supratympanic organ, discovered by Graber, which may be termed the organ of Graber. These structures are situated at the extremity of a large nerve which springs from the thoracic ganglion. Miiller's Organ.—Muller first described the tympanic ap- paratus in the Acrididse, and discovered a ganglionic structure situated upon the inflected angle of the tympanic sclerite. This organ has been carefully described by Siebold, Leydig, and more recently by Graber; it is undoubtedly a terminal. Fig. 76.—Details of the Miillerian organ, after Graber [283] A. The Miillerian ganglion (w), and a small portion of the tympanic mem- brane [mt) of Pachytyhis stridulus, showing the two processes of the tympanic sclerite which project from its inner surface. Their position in the figure is due to displacement in the process of mounting the specimen. B. A portion of the Miillerian ganglion of Acridium tartaricum. From a specimen teased out in Miiller's fluid. nerve ganglion surmounted by a group of chordotonal organs, and enclosed in a minute sac filled with fluid. It has been aptly compared with the membranous labyrinth. Siebold's Organ is much more complex than Miiller's, which is frequently quite rudimentary. It consists of two parts, which I shall term the bulb and the crista. The bulb closely resembles. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1890
