Archive image from page 321 of The anatomy, physiology, morphology and. 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; CUbiodiversity4765349-9875 Year: 1890 ( 6i4 THE SENSES AND SENSORY ORGANS. thick-set stylets which are found in another part of the ganghon.' Lee's description of this organ, so far as my observations go, is correct; but he was quite wrong when he denied the chordo- tonal character of t
Archive image from page 321 of The anatomy, physiology, morphology and. 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; CUbiodiversity4765349-9875 Year: 1890 ( 6i4 THE SENSES AND SENSORY ORGANS. thick-set stylets which are found in another part of the ganghon.' Lee's description of this organ, so far as my observations go, is correct; but he was quite wrong when he denied the chordo- tonal character of the end organs in the scalse and cupola. I can only explain this on the supposition that he worked with imperfectly fixed specimens, as it is only occasionally that sections exhibit the chordotonal organs of the cupola and scalae, and it is probable that the chordotonal threads are easily torn away by the razor in cutting the sections. The various appearances presented by the chordotonal organs of the halteres are very difficult to understand. That Fig. 80.—Three groups of chordotonal from the halter of a Blow fly, seen with a \ inch objective. A, from the cupola; B, from Lees organ ; and C, from the scala inferior and adjacent integument. there are two kinds is indubitable, and in general the slender rods are found in the smaller groups, whilst those of the cupola and scape are the larger form. In some sections, evidently through the scala inferior, I have observed small chordotonal organs in groups (Fig. 80). These are, I be- lieve, only found close to Lee's organ. c. On the Functions of the Halteres. The halteres have been regarded by various authors as— (i) sound-producing organs; (2) olfactory organs; (3) organs
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