﻿1208 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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(2) rubber replica of the exfoliated brachial valve, X 2, New York State Mus. 

 Rysedorf conglomerate, Rysedorf Hill, near Albany, N. Y. 



B. Christiania cf. C. platys Cooper, new species 861 



(3, 4) Pedicle and brachial views of a broad individual, X I, figured specimen, 

 II757S ; (5) brachial view of the preceding specimen, X 2, showing pseudo- 

 deltidium. 



Little Oak formation, £ mile north of the bridge on U. S. Highway 31, Pelham, 

 Bessemer Iron District (15') Quadrangle, Ala. 



C. Christiania subquadrata (Hall) 862 



(6-8) Pedicle, brachial, and side views of a complete but young specimen, X 2, 

 hypotype, 117579a. 



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

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



D. Christiania subquadrata (Hall) 862 



(9-1 1 ) Brachial, pedicle, and side views of a complete specimen, X I, hypotype, 

 71501 ; (12-16) anterior, side, posterior, pedicle, and brachial views, X 2, of the 

 preceding specimen. 



Little Oak formation, \ mile north of Pelham and 660 feet east of the inter- 

 section of Cahaba Valley and Helena roads, Bessemer Iron District (15') Quad- 

 rangle, Ala. 



(17) Brachial view of a complete specimen, X I, hypotype, 111013a. 



Upper part of "Lenoir" limestone, 0.15 mile south of Pratt Ferry, Blocton 

 (15') Quadrangle, Ala. 



(18) Brachial view of a complete specimen, X 1, hypotype, 111016a; (19) pos- 

 terior part of preceding specimen enlarged X 2 to show apical foramen, pseudo- 

 deltidium, and cardinal process; (26, 27) interior of two pedicle valves showing 

 the complicated pallial sinuses, X 2, hypotypes, 111020b, 111020c; (31, 36) 

 brachial interior in full view and posterior view showing bilobed cardinal process, 

 muscle platforms, brachiophores, and septa, X 2, hypotype, ni02od; (32, 34 

 35. 39) interior, anterior, side, and posterior views, X 2, of a brachial interior 

 showing septa, brachiophores, and cardinal process, hypotype, 111020a; (37) 

 posterior view of the same brachial valve, X 3, showing muscle platforms. 



Arline formation (lower middle), opposite cabin 0.3 mile southeast of Friends- 

 ville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. 



(20) Impression of the pedicle interior showing long pallial trunks, X 2, hypotype, 

 111017b. 



Athens formation (base), near Christiansburg, Sweetwater (T.V.A. 131-SW) 

 Quadrangle, Tenn. 



(21, 22) Impression of the pedicle interior and posterior view showing muscle 

 scars, X 2, hypotype, 111018a; (30) impression of the brachial interior showing 

 the marks of the septa, X 2, hypotype, 111018b; (23, 24) interior and posterior 

 views of another pedicle interior showing pallial marks and muscle scars, X 2, 

 hypotype, 111021a; (29) another impression of the pedicle interior, X 2, 

 hypotype, 111021c. 



Athens formation (base), just east of road intersection, 2\ miles southeast 

 of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. 



(25, 28) Pedicle valves showing complicated pallial trunks of the interior, X 2, 

 hypotypes, 111029a and 111015. 



Arline formation (middle), north side of wagon road in glade, \ mile south- 

 east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. 



(33) Interior of a well-preserved brachial valve, X 2, showing septa and small 

 muscle platforms, hypotype, 117580J. 



