Archive image from page 441 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 ( 722 THE GENERATIVE ORGANS. As has already been pointed out, there are apparently closer affinities between the Insecta and the solid-bodied Worms, than between the Insecta and the Annelida, which are more frequently compared with them. The Turbell
Archive image from page 441 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 ( 722 THE GENERATIVE ORGANS. As has already been pointed out, there are apparently closer affinities between the Insecta and the solid-bodied Worms, than between the Insecta and the Annelida, which are more frequently compared with them. The Turbellaria have the same spongy reticulum between their internal organs ; as has been already stated, both the Fir,. 103.—Diagram of (he generative organs of a Rhabdoccelian (after Graff)- b i; bursa copulatrix ; ,4', germogen ; r s, receptaculum seniinis ?;/,/, testicles ; II, uterus ; f, v, vitellogen ; v s, vesiculus seminalis 3 ; , common genital duct. remarkable metamorphoses of Insects and some peculiarities of their embryo are foreshadowed in the Nemertid Worms ; and, lastly, the water vascular system of the solid-bodied Worms is probably the homologue of the tracheal system of the Insect (p. 358). Two phenomena are observed in the reproductive process m many Trematodes and in some Insects ; these are asexual or Planarians, Zool. article 'Encyclopedia Britannica,' Lond., 1891.
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