. Elements of zoölogy : a textbook. Zoology. ' Spire. W, whorls. Lines of Growth .„ Umbilicus Columella. Outer lip. Aperture. • Canal. Names of the parts of a Gasteropod Shell. FIG. 544. =;?;-?;-;-|-;^-;- s - - J- .1 -rrrrr «M^_ JX sn - I — J jj — y Jj£ l^/ Ik/ «j j u "J V a v!« W Jlvl vl^lV/ wi^iwiu:^ wlwl- July a£fiSbi^iaS=!- - 5 i - g 3 J2 5 « J « ci; iji} CN 2w*!5S -M** "'i- ^y ,, , lei Lingual teeth of Achatina, with central and lateral teeth enlarged. FIG. Tongue of the Whelk, Buccinum undatum. Woodward. shell when they withdraw within. It is a horny plate, sometim
. Elements of zoölogy : a textbook. Zoology. ' Spire. W, whorls. Lines of Growth .„ Umbilicus Columella. Outer lip. Aperture. • Canal. Names of the parts of a Gasteropod Shell. FIG. 544. =;?;-?;-;-|-;^-;- s - - J- .1 -rrrrr «M^_ JX sn - I — J jj — y Jj£ l^/ Ik/ «j j u "J V a v!« W Jlvl vl^lV/ wi^iwiu:^ wlwl- July a£fiSbi^iaS=!- - 5 i - g 3 J2 5 « J « ci; iji} CN 2w*!5S -M** "'i- ^y ,, , lei Lingual teeth of Achatina, with central and lateral teeth enlarged. FIG. Tongue of the Whelk, Buccinum undatum. Woodward. shell when they withdraw within. It is a horny plate, sometimes strengthened by shelly 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 Tenney, Sanborn, 1827-1877. New York : Scribner
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