. Text-book of zoology for junior students. Zoology. 7G IXVEMTEBRATE ANIMALS. CHArXEE YIII. SUB-CLASSES LUC'ERNARIDA, GRAl^OLITID.'E, AND HYr)RO(;:ORALLIN.'E. SrB-cr,ASs Lucernarida. The next gvduii of the living /fijthxKnii is tliat of the Ziicernarida, under wliich name are iiichided a con- siderable number of forms, differing from one another to a great extent in external ajppearance. It will be sufficient hereto describe one or two tyjiical forms. One grouji of the Liicernariila is rejire- senteil liy Liici'muria itself (tig. 41), in which there is a cnp-shaped body of a moi-e or less gela
. Text-book of zoology for junior students. Zoology. 7G IXVEMTEBRATE ANIMALS. CHArXEE YIII. SUB-CLASSES LUC'ERNARIDA, GRAl^OLITID.'E, AND HYr)RO(;:ORALLIN.'E. SrB-cr,ASs Lucernarida. The next gvduii of the living /fijthxKnii is tliat of the Ziicernarida, under wliich name are iiichided a con- siderable number of forms, differing from one another to a great extent in external ajppearance. It will be sufficient hereto describe one or two tyjiical forms. One grouji of the Liicernariila is rejire- senteil liy Liici'muria itself (tig. 41), in which there is a cnp-shaped body of a moi-e or less gelatinous consistence, usu- ally attached by its smaller extremity to , this end of the boily being- developed into a small sucker. Like the Jfi/dra, however, Lueernaria is not fixed, but can detach itself at will, and can even swim freely by means of the alternate contraction ami ex)iausion of the cup- .sliajied body (or "umbrella," as it is termed). Rdund the margin of the cup .â ire tufts fif short tentacular processes, a}id in its centre is fixeil a single polypite, fiuiiished with a four-lobed mouth. The elements of rejiroduction are de- V(dopeil within the body of Lueernaria ilself, anil it does not give off any genera- ti\e buds, as so commonly occurs in other forms. idii is rei) by the organisms formerly leiiiied "hidden-eyed" 2ft'ihi!<a\ and familiarly known as. .In],I K]i. 11). â d Cill Aniitlicr tyiie of the LiirrriKir. 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 Nicholson, Henry Alleyne, 1844-1899. New York, American Book Co
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1885
