Verrill, A. Hyatt (Alpheus Hyatt), 1871-1954 · New York, R. M. McBride & co. · leaf 190
wn as skates. Some-times you will find somewhat similar egg-cases withlonger, twisted filaments and these you may knowas the egg-cases of sharks. Among the trash upon the beaches you will alsofind many shells which are perfect enough to keep.The spiral or coiled forms, or univalves (Fig. 3),are… … Fig. 2
Collectors and collecting
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