Page:Walcott Cambrian Geology and Paleontology II.djvu/64

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 * colspan="5" align="center" | DESCRIPTION OF PLATE 4
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 * colspan="4" | Sidneyia inexpectans Walcott
 * align="right" | 24
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 * 1.
 * style="text-indent:-10px;padding-left:10px;" | Outer portion of the third pair of appendages of the cephalo-thorax (✕ 2). In this there appears to have been a somewhat different development of parts as compared with those seen in figs. 3 and 4. U. S. National Museum, Catalogue No. 57490.
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 * 2.
 * style="text-indent:-10px;padding-left:10px;" | Another form of the outward extension of one of the third pair of appendages of the cephalo-thorax (✕ 2). This type reaches a very large size; one has a length of 65 mm. U. S. National Museum, Catalogue No. 57491.
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 * 3.
 * style="text-indent:-10px;padding-left:10px;" | Outer extension of a part of one of the outer portions of the compound chelate termination of a third appendage (✕ 2). The anterior arm, as shown in figs. 1 and 4, is broken away. U. S. National Museum, Catalogue No. 57492.
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 * 4.
 * style="text-indent:-10px;padding-left:10px;" | Outer portion of one of the third pair of appendages of the cephalo-thorax, showing on the jointed primary appendage large, elongated spines with spinose fringes and a short, jointed appendage attached to the posterior outer side of the gnathobase. ✕ 2. U. S. National Museum, Catalogue No. 57493.
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 * 3.
 * style="text-indent:-10px;padding-left:10px;" | Outer extension of a part of one of the outer portions of the compound chelate termination of a third appendage (✕ 2). The anterior arm, as shown in figs. 1 and 4, is broken away. U. S. National Museum, Catalogue No. 57492.
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 * 4.
 * style="text-indent:-10px;padding-left:10px;" | Outer portion of one of the third pair of appendages of the cephalo-thorax, showing on the jointed primary appendage large, elongated spines with spinose fringes and a short, jointed appendage attached to the posterior outer side of the gnathobase. ✕ 2. U. S. National Museum, Catalogue No. 57493.
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 * 4.
 * style="text-indent:-10px;padding-left:10px;" | Outer portion of one of the third pair of appendages of the cephalo-thorax, showing on the jointed primary appendage large, elongated spines with spinose fringes and a short, jointed appendage attached to the posterior outer side of the gnathobase. ✕ 2. U. S. National Museum, Catalogue No. 57493.
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