. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OBSERVATIONS ON COLEOPTERA. 189 seems to be general for insects, almost identical conditions being shown by Holmgren in Lepidoptera. When the muscle ruptures the break always occurs along the line AB (Fig. 10) level with the surface of the hypodermis, and the long drawn out tendinous ends of each muscle are again in-. Fn;. II. C. feinorata. Section to show the relation of the muscle fibers immedi- ately after separation from the old cuticula and after the new cuticula has been partly developed. corporated into the new cuticu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. OBSERVATIONS ON COLEOPTERA. 189 seems to be general for insects, almost identical conditions being shown by Holmgren in Lepidoptera. When the muscle ruptures the break always occurs along the line AB (Fig. 10) level with the surface of the hypodermis, and the long drawn out tendinous ends of each muscle are again in-. Fn;. II. C. feinorata. Section to show the relation of the muscle fibers immedi- ately after separation from the old cuticula and after the new cuticula has been partly developed. corporated into the new cuticula as it is formed, cuticula being developed between the tendons by specialized hypodermal cells and the tendinous ends themselves becoming chitinous. These muscle changes, as far as they are related to the hypo- dermis and cuticula behave exactly in Coleoptera as Holmgren has described for the Lepidoptera and the same behavior prob- ably is true for insects in general. Cnticula Structures Removed and Replaced at Ecdysis. — Con- siderable diversity of opinion prevails as to what and how much of the chitin is removed at ecdysis in insects. I find in L. dcciin- liucata that ecdysis takes place in the following structures: i. Body Wall. - - Cuticula entirely removed, including the chi- tinous covering of all hairs, spines and scales, sensory pits and sense organs, including chitinous lenses of both simple and com- pound 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
