. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . er portion of the aperture is covered by a horizontal shelly partition, called the diaphragm, a space being teft below wliich would correspond to the forecastle of a ship. The stern is round,and the • bow is suggestively pointed. C. plana. In this species the shell is white and flat,or slightly concave. Although it is pointed at the bow end and square at the stern, the nautical resemblancestops there, because, being flat, there are no swellingsides and bow. The diaphragm is ab
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . er portion of the aperture is covered by a horizontal shelly partition, called the diaphragm, a space being teft below wliich would correspond to the forecastle of a ship. The stern is round,and the • bow is suggestively pointed. C. plana. In this species the shell is white and flat,or slightly concave. Although it is pointed at the bow end and square at the stern, the nautical resemblancestops there, because, being flat, there are no swellingsides and bow. The diaphragm is about one half thelength of the shell, convex, shininjr, white, and trans-lucent. C. jihtiiK lives »-enerally within the aperture oflarue dead shells. It has a wide ran^e, from Maine toFlorida. C. OCUleata. A common Floridian species which has a remarkable ratine, bcin^ found in nearly all the tropical and semi- tropical waters of the world. It is smaller than C. funiicntn, is reddish- brown with a white diaphragm, and has several radiating ribs on the back, which are inclined to be nodulous. (Plate I A VI 1 1.). iiln f<:niii-Klit.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
