. A contribution to insect embryology. Insects. No. I.] CONTRIBUTION TO INSECT EMBRYOLOGY. 17 edge of the organ itself appear to creep along under and a little in the rear of the advancing serosal elements. I cannot here go into greater detail without unduly increasing the number of my figures. Nor is it necessary, since it will, I believe, be. Fir,. II. Diagrams illustrating the movements and envelopes of the Xiphidhivi embryo. Z), the stage of the shortened embryo on the dorsal yolk ; E, embryo returning to the ventral surface ; F, embryo nearly ready to hatch, ch., chorion ; bl. c, Blasto-
. A contribution to insect embryology. Insects. No. I.] CONTRIBUTION TO INSECT EMBRYOLOGY. 17 edge of the organ itself appear to creep along under and a little in the rear of the advancing serosal elements. I cannot here go into greater detail without unduly increasing the number of my figures. Nor is it necessary, since it will, I believe, be. Fir,. II. Diagrams illustrating the movements and envelopes of the Xiphidhivi embryo. Z), the stage of the shortened embryo on the dorsal yolk ; E, embryo returning to the ventral surface ; F, embryo nearly ready to hatch, ch., chorion ; bl. c, Blasto- dermhaut ; sr., serosa ; ind^, outer indusium ; iud^, inner indusium ; ind^ -\- am., inner indusium and amnion fused ; am., amnion ; ind"^ c, cuticle of the inner indusium ; ind'^ s., granular secretion of the inner indusium ; am. s., amniotic secretion ; v., yolk ; cl., columella ; gb., germ-band. acceded that the process briefly described in the above paragraph, though now occurring in comparatively few embryos, is very probably the more primitive process, whereas the slurring observed in so many cases is to be attributed to an unquestionably rudimental condition of the 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 Wheeler, William Morton, 1865-1937. Boston : Ginn & Company
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
