﻿1226 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 



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C. Macrocoelia cf. M. magna (Butts) 894 



(13) Brachial view of a large specimen, X 1, hypotype, 117779a. 



Benbolt formation, on Virginia Highway 74, 0.2 mile southwest of New 

 Bethel Church, \ mile east of junction with U. S. Highway 54, Hilton (T.V.A. 

 197-NW) Quadrangle, Va. 



D. Opikina maja Cooper, new species 913 



(14) Brachial view of a large specimen, X I, holotype, 117819. 



Ridley formation, on U. S. Highway 27, just northwest of Chickamauga 

 Creek, Kensington (T.V.A. 106-SE) Quadrangle, Ga. 



Plate 237 

 Opikina 



A. Opikina speciosa Cooper, new species 918 



(i, 2) Brachial and pedicle views of a large specimen, X 1, paratype, 117836a. 

 Wardell formation, 0.3 mile southwest of Little Barren Church on old Ten- 

 nessee Highway 33, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. 

 (3-7) Respectively anterior, posterior, side, brachial, and pedicle views of a com- 

 plete specimen, X I, paratype, 117837a; (8) same specimen as preceding, X I, 

 tilted to show unbonal region of pedicle valve; (10, 11) brachial and pedicle 

 views of another complete specimen, X I, paratype, 117837b; (14) brachial inte- 

 rior, X 1 j showing ridges, paratype, 117837c. 



Wardell formation, on Tennessee Highway 33, i mile west of the cemetery at 

 the bend below Kecks Mill, Powder Springs (T.V.A. 154-SW) Quadrangle, 

 Tenn. 

 (9) Brachial interior showing the adductor ridges, X 1, paratype, 123287b. 



Ridley formation = Wardell, quarry i? miles south-southeast of Cove Church, 

 Kensington (T.V.A. 106-SE) Quadrangle, Ga. 



(12) Pedicle interior showing muscle scars, X 1, paratype, 117834c; (15, 16) re- 

 spectively X 1 and X 2 enlargements of the brachial interior showing ridges, 

 muscle scars, paratype, 117834b; (17) interior of another brachial valve, X 1, 

 paratype, 117834a. 



Wardell formation, north quarry on Station Creek, j mile south of U. S. 

 Highway 58, 2 miles east of Cumberland Gap, Wheeler (T.V.A. 153-SE) Quad- 

 rangle, Tenn. 



(13) Pedicle interior showing form of muscle area, X I, paratype, 117838a. 

 Wardell formation, back of Camp Loyston, Maynardville (30') Quadrangle, 



Tenn. 

 (18, 19) Respectively Xi and X2 enlargements of the brachial valve, showing 

 ridges and cardinalia, paratype, 117831b. 



Pierce formation, Bradleys Creek, 1 mile east of Lascasas, Rutherford County, 

 Tenn. 



B. Opikina dorsatiformis Cooper, new species 905 



(20-23) Respectively brachial, anterior, posterior, and side views of a complete 

 specimen, X I, holotype, 117801; (24-28) respectively brachial, anterior, poste- 

 rior, side, and pedicle views, X 2, of the holotype. 



Edinburg formation (lower part of Nidulites zone), just east of the small 

 ravine beside the road along Tumbling Run, i£ miles southwest of Strasburg, 

 Strasburg (15') Quadrangle, Va. 



