﻿I060 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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F. Nothorthis transversa Cooper, new species 315 



(41-43, 46) Respectively brachial, anterior, side, and posterior views of a small 

 but complete individual, X 4, paratype, Ii7p85d; (44, 45, 52, 53) respectively 

 posterior, anterior, side, and brachial views of a specimen larger than the previ- 

 ous one, X 4, paratype, 117985a; (47-51) respectively posterior, anterior, side, 

 pedicle, and brachial views of a large individual, X 4, holotype, 117986; (54, 56) 

 interior of the brachial valve, X 4 and X 6, showing the cardinalia, paratype, 

 117985b; (55) interior of another brachial valve showing incipient cardinal 

 process, X 4, paratype, 117985c; (57, 58) interior of a brachial valve showing 

 adductor scars, X 4, X 6, paratype, 117985c 

 Horizon and locality same as preceding. 



Plate 39 

 Cyrtonotella, Nicolella, Taphrorthis 



A. Taphrorthis peculiaris Cooper, new species 328 



(1, 5) Brachial interior and exterior, X 2, paratype, 109883b; (3) brachial exte- 

 rior, X 1, of same; (2) another brachial interior, X 2, paratype, 109883c; 



(4, 6) exterior and interior of the pedicle valve, X 2, holotype, 109883c. 



Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, 

 Maccrady (T.V.A. 218-NW) Quadrangle, Va. 



B. Nicolella strasburgensis Butts 318 



(10) Brachial exterior, X 1, lectotype, 97549a; (7) view of interareas, X 2, 

 showing chilidial plates of lectotype; (9) another specimen showing chilidial 

 plates, X 2, paratype, 97549c. 



Oranda formation, along the railroad I mile east of Strasburg Junction, 

 Strasburg (15') Quadrangle, Va. 

 (8) Plasticine replica of the brachial exterior, X I, hypotype, 109889b; (11) im- 

 pression of the pedicle interior, X 1, hypotype, 109889a. 



Oranda formation, 1 mile northwest of Guilford Springs, 2% miles southwest 

 of Chambersburg, Chambersburg (15') Quadrangle, Pa. 



C. Cyrtonotella sub plana Cooper, new species 323 



(12) Brachial interior showing cardinal process and chilidial plates, X 2, para- 

 type, 109860b; (13-15) side, pedicle, and brachial views of a complete specimen, 

 X 1, holotype, 109860a. 



Edinburg formation (Crytonotella zone), just above quarry, i to i mile east 

 of Strasburg Junction, Strasburg (15') Quadrangle, Va. 



D. Cyrtonotella grandistriata (Willard) 321 



(16) Exterior of an imperfect pedicle valve showing alternate character of cos- 

 tellae, X I, hypotype, 109846a; (17, 18) brachial and pedicle views of an imper- 

 fect specimen preserving both valves in contact, X 1, hypotype, 99262a; (19) 

 brachial interior, X 2, hypotype, 109854a. 



Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady 

 (T.V.A. 218-NW) Quadrangle, Va. 



E. Nicolella actoniae (Sowerby) 317 



(20) Brachial view showing interareas and chilidial structure, X 3, for comparison 

 with N. strasburgensis above, figured specimen, 109888. 

 Lyckholm formation (Fio), Moe near Taps, Estonia. 



Plate 40 

 Cyrtonotella, Taphrorthis 



A. Taphrorthis emarginata Cooper, new species 327 



(1, 2) Pedicle and brachial views of a small specimen, X h paratype, n( 

 (9) same, X2; (6) another complete individual, X T , paratype, 116889c. 



