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SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOL. 57
| DESCRIPTION OF PLATE 2 | ||||
| PAGE | ||||
| Sidneyia inexpectans Walcott | 24 | |||
| Fig. | 1. | A large dorsal shield (natural size) flattened and somewhat broken by compression in the shale; an antenna projects out from each side in front of the eye, and, on the right-hand side, probably the fourth appendage of the cephalo-thorax which has been pushed back under the second segment of the abdomen. U. S. National Museum, Catalogue No. 57487. | ||
| 2. | Enlargement of the under side of a small cephalo-thorax to which are attached the antennae and four pairs of appendages. Only a portion of the epistoma is preserved. This is the only specimen in the collection preserving the appendages of the cephalo-thorax in their approximately normal position. ✕ 3. U. S. National Museum, Catalogue No. 57488. | |||
| 3. | A portion of the matrix of the specimen represented by fig. 1. ✕ 3. | |||
| The illustration on pls. 2-7 are from photographs taken by Mr. J. M. Jessup and slightly retouched by pencil. | ||||
