The Cylinder Shells - Family Cylindrellidae

THE CYLINDER SHELLS - FAMILY CYLINDRELLIDAE. Shell screw-like, turreted, many-whorled, the last whorl more 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, GId., is a small, solid, horn-coloured shell striped lengthwise with fine white lines. Its tip is truncated, the free round mouth protrudes in the form of a bell. Length, f inch.

Habitat.— Mouth of Miami River, Fla.

C. Poeyana,

d'Orb., is stouter, pupiform, longitudinally striated and white-lined. The animal walks by affixing the

extended snout and dragging the body up to the point. The shell is carried in a horizontal position. The body is about one quarter as long as the shell. Length, inch.

Habitat.— Cuba, Southern Florida.

Several West Indian species are slim as a match, a tightly coiled spiral, with the little free cup-shaped peristome at right angles with the spire. C. Blandianum, Cr. and Fisch., and C. Ghiesbreghti, Pfr., both Mexican, suggest by their form, size and colouring a half-smoked cigar.

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