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386 Avierican Seashells<br />

like nodes. Behind the tiny, curved beaks there is an ovalish, heart-shaped<br />

depression. Internal margin of valves strongly crenulated with tiny teeth.<br />

Adults are commonly misshapen by concentric growth stops. Common from<br />

shallow water to 68 fathoms. Compare with L. multilineata.<br />

Figure 78. American Lucinas. ATLANTIC: a, Fhacoides fllosiis Stimpson, i to<br />

3 inches; b, Liicina soffibrerensis Dall, Y^ inch; c, Liicina amiantus Dall, % inch;<br />

d and e, Lucina leiicocyvia Dall, 34 inch; f, Liicina multilineata Tourney and<br />

Holmes, % inch. PACIFIC: g, Lucina approxiinata Dall, ^ inch; h, Liicina tenui-<br />

sculpta Cpr., % inch.<br />

Subgenus Farvilucina Dall 1901<br />

Lucina multilineata Tuomey and Holmes<br />

North Carolina to both sides of Florida.<br />

Many-lined Lucina<br />

Figure ySf<br />

% to ^/4 inch in length, almost circular in shape, very obese, moderately

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