. 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. THE DEVELOPMENT OF THE NYMPH. 325 In the resting larva and pronymph the neuroblast increases rapidly in size, and, as already stated, its position varies at different stages of the development of the cephalo-thoracic Fig. 46. —a semicliagrainiiialic scciion of one of the hemispheres, the optic cup and optic disc from a pronymph on the t
. 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. THE DEVELOPMENT OF THE NYMPH. 325 In the resting larva and pronymph the neuroblast increases rapidly in size, and, as already stated, its position varies at different stages of the development of the cephalo-thoracic Fig. 46. —a semicliagrainiiialic scciion of one of the hemispheres, the optic cup and optic disc from a pronymph on the third day of the pupa stage : a c, anterior commissure ; a g, Ranglion ; 0 d, optic disc ; a, n;4ophagus ; 0 s, optic slalk : r t, retinal ilisc ; /• .v, retinal stalk, connecting the ciip-llUe ilisc with the optic ganglion, which is seen surrounding its inner extremity ; tr, trahecula. During the evolution of the head discs on the second or third day of the pupa state, the hemispheres, which up to this period remain approximately spherical, become pyriform, and a groove. 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 Lowne, Benjamin Thompson, 1839-. London, Pub. for the author by R. H. Porter
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1890
