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SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOL. 57
DESCRIPTION OF PLATE 18
| Legend: | |
| e=enteric canal. | pr=parapodia. |
| m=mouth. | s=setæ. |
| p=papillæ. |
| PAGE | ||||
| Miskoia preciosa Walcott | 114 | |||
| Fig. | 1. | (✕ 2.) Anterior portion of a specimen 26 cm. in length. The extruded proboscis is 5.5 cm. in length. The proboscis is broken midway by a slight displacement of the shale. The enteric canal is shown extending inward from the base of the proboscis. U. S. National Museum. Catalogue No. 57616. | ||
| 2. | (✕ 2.) Portion of the body of the specimen of figure 1, beginning 6 cm. back of the mouth or anterior end, showing the enlargement of the enteric canal. | |||
| 3. | (✕ 2.) Anterior end of a body 9 cm. in length in which the proboscis appears to have been withdrawn. Setæ about the mouth, annular lines, and segments finely shown. U. S. National Museum, Catalogue No. 57617. | |||
| 4. | (✕ 2.) Portion of a body showing the parapodia on left side. U. S. National Museum, Catalogue No. 57618. | |||
| 5. | (✕ 2.) Nine (9) centimeters in length of terminal portion of annelid, the anterior portion of which is represented by figure 1. The parapodia are finely shown on the left side. | |||
All of the specimens illustrated on this plate are from locality (35k) Middle Cambrian: dark siliceous shales in the Burgess shale member of the Stephen formation on the west slope of the ridge between Mount Field and Wapta Peak, one mile (1.6 km.) northeast of Burgess Pass, above Field, British Columbia.
