. The shell book . TROPICAL SXAILS 1 Zebra Agate Shell, Acliatina :ebra. 3 Brazilian Hungry Snail, Biilimus oralns. hatching from eggs 2 Banded Tree Snail, Ligiius jasciala. 4 Brazilian Hungry Snail, Bulimia oraltis, adult shell. 5 Left-handed Agate Shell, Achatina CYLINDER SHELLS, POND SNAILS, MIDAS EAR AND TOOTH SHELLSI CyUndrclla 4 Mcgaspira chitior. ^ Auricula auris-Mititr. 11 Limnaa stagtialis. 2 Clati irid-nt. 5 Cylindrella Agnesiana. 3 Clansilia Arihniiniaua. 6 Strophia (Ccrion) dfciimana. Planorbis gyrina. Dentaliitm elepha
. The shell book . TROPICAL SXAILS 1 Zebra Agate Shell, Acliatina :ebra. 3 Brazilian Hungry Snail, Biilimus oralns. hatching from eggs 2 Banded Tree Snail, Ligiius jasciala. 4 Brazilian Hungry Snail, Bulimia oraltis, adult shell. 5 Left-handed Agate Shell, Achatina CYLINDER SHELLS, POND SNAILS, MIDAS EAR AND TOOTH SHELLSI CyUndrclla 4 Mcgaspira chitior. ^ Auricula auris-Mititr. 11 Limnaa stagtialis. 2 Clati irid-nt. 5 Cylindrella Agnesiana. 3 Clansilia Arihniiniaua. 6 Strophia (Ccrion) dfciimana. Planorbis gyrina. Dentaliitm prctiosum. CHAPTER LXIX: THE CYLINDER SHELLS FAMILY CYLINDRELLID/C Shell screw-like, turreted, many-whorled, the last whorlmore or less contracted and detached; peristome reflected, pro-longed, apex often cut off. Animal like Helix. Genus CYLINDRELLA, Pfr. Characters of the family. Many species of small mollusks,of sluggish movements. West Indies. C. jejuna, Gld., is a small, solid, horn-coloured shell stripedlengthwise with fine white lines. Its tip is truncated, the freeround mouth protrudes in the form of a bell. Length, f inch. Habitat.— Mouth of Miami River, Fla. C. Poeyana, dOrb., is stouter, pupiform, longitudinallystriated and white
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