Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
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33 Interior showing muscular impressions, hinge etc.
34 Typical, illustrated in Bal. N.Y. Vol. VII, pl. fig.
38 The specimen shows the two layers of the test,
and also the minute structure of the outer
layer, which seems to preserve the original
colored markings of the shell.
40 This specimen preserves portions of the head, thorax
and pygidium and a very perfect hypostoma.