Image from page 153 of “Sea-shore life; The invertebrates of the New York coast” (1905) – more Marine Life goodness curated by www.SardineRunPE.co.za
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Title: Sea-shore life; The invertebrates of the New York coast
Year: 1905 (1900s)
Authors: Mayor, Alfred Goldsborough, 1868-1922 New York Zoological Society
Subjects: Marine animals
Publisher: New York : The New York zoological society
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries
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Text Appearing Before Image:
J^ig. Ill; Eel Grass, at low tide, covered with Periwinkles.Annisquam, Mass.
Text Appearing After Image:
Fig. 112; DECKER SHELL. Long Island Sound. other firm anchorage. In these strings of shells the heads areusually pointed all in the same direction. ■ The young hatch as MOLLUSKS 151 free-swimming \eliger larvte, but after two or three weeks theysettle down as young Loat-shells. Until they are about half grownthey can move slowly, but finally they become fixed for the remain-der of their lives. The males are smaller and more active than thefemales, but they also lose all power of locomotion when more thanhalf grown. This species may be recognized by its decidedly con-vex shell, gray, horny color, and faint reddish-brown flecks overthe surface of the shell. Crepidida plana is a small, flat, white species which liveswithin shells that are being carried about by hermit crabs. Thehead end of the crepidula almost always faces the opening of theshell within which it lives. Its breeding habits are similar tothose of C. fornicata. Crepidula convexa is the smallest of our species, and its she
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