﻿1 1 10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



Page 

 another well-preserved small specimen, X 2, hypotype, 117106c; (41) pedicle 

 view, X 4, of the preceding. 



Effna formation, 1 mile east of Tilson Mill, 16 miles northeast of Marion, 

 Nebo (T.V.A. 223-NW) Quadrangle, Va. 



Plate 102 

 Oxoplecia 



A. Oxoplecia gibbosa Cooper, new species 543 



(1-5) Respectively brachial, side, anterior, pedicle, and posterior views, X 1, of 

 the holotype, 11 0860; (6) pedicle exterior, X 2, of the holotype. 



Ward Cove formation, Inskip, military coordinates E2, 604, 600-700/N596, 350, 

 Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. 



(7-11) Respectively anterior, brachial, side, pedicle, and posterior views of a 

 specimen younger than the holotype, X 1, paratype, 110855c; (12-16) respec- 

 tively brachial, anterior, side, posterior, and pedicle views of a specimen inter- 

 mediate in size between the holotype and the preceding, X I, paratype, 110855a; 

 (17) brachial exterior, X 2, of the preceding. 



Ward Cove formation, Hickey place, 2 miles southwest of Hall Crossroad, 

 Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. 



B. Oxoplecia parva Cooper, new species 552 



(18-22) Respectively posterior, anterior, side, brachial, and pedicle views, X 1, 

 of the holotype, 117118; (23, 24) brachial and pedicle views, X 2, of the holo- 

 type, showing ornamentation. 



Benbolt formation (high), east bank of a sinkhole, 300 feet south of Lakeview 

 Church, on Virginia Highway 71, Moll Creek (T.V.A. 196-SE) Quadrangle, 

 Va. 



C. Oxoplecia planiventra Cooper, new species 554 



(25-28) Respectively brachial, pedicle, side, and anterior views, X I, of the holo- 

 type, 117120; (29) pedicle side of holotype, X 2, showing ornamentation. 



Sevier formation (lower), \ mile northeast of Miser, Louisville (T.V.A. 

 138-SE) Quadrangle, Tenn. 



(30-32) Respectively brachial, brachial tilted, and side views of another speci- 

 men, X 2, paratype, 117121a. 



Sevier formation, \ mile north of Gooseneck, Louisville (T.V.A. 138-SE) 

 Quadrangle, Tenn. 



D. Oxoplecia monitorensis Cooper, new species 548 



(33-37) Respectively brachial, anterior, side, posterior, and pedicle views, X h 

 of the holotype, 117111a. 



Eureka group (yellow limestone on 25-foot sandstone at base), saddle just 

 north of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (i°) 

 Quadrangle, Nev. 



E. Oxoplecia nevadensis Cooper, new species 550 



(38-42) Respectively brachial, side, anterior, posterior, and pedicle views of a com- 

 plete specimen, X I, holotype, 117115a; (43) posterior of preceding, X 2, show- 

 ing interarea with nearly smooth pseudodeltidium; (44-48) respectively poste- 

 rior, brachial, anterior, side, and pedicle views of another complete specimen, 

 X I, paratype, 117115b; (49) brachial view, X 2, of preceding. 



Eureka group (dark gray shale under Eureka quartzite), north-facing nose 

 of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (i°) Quad- 

 rangle, Nev. 



