Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . the has described and figured certain definite arrangements ofthese digestive cavities, as well as of the alimentary canal, to whichhe states that they are appended. In the Monads, and many otherof the more minute species of the Polygastria, he affirms the stomachsto arise by separate tubular pedicles from a common mouth, as shownmjig. 11., copied from his great work. Such species have no intes-tine, no anus, and are said to be anenterous. In others, he
Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . the has described and figured certain definite arrangements ofthese digestive cavities, as well as of the alimentary canal, to whichhe states that they are appended. In the Monads, and many otherof the more minute species of the Polygastria, he affirms the stomachsto arise by separate tubular pedicles from a common mouth, as shownmjig. 11., copied from his great work. Such species have no intes-tine, no anus, and are said to be anenterous. In others, he believesthe so-called stomachs to be appended to an alimentary canal {Poly-gastria eiiterodela Ehr.) : which canal may be bent into a loop, anddescribe a circle, with the anus opening near the mouth, as in Vor-ticella {Jig. 12.) ; or it may pass in a straight line through the axisof the body, as in Enchelis; or form several flexuous curves in itspassage from the mouth to the opposite extremity of the body, as inLeiicophrys {Jig. 13.). But sometimes, as in the Kolpoda, neitherthe mouth nor anus is terminal in
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1850
