﻿Il86 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 



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C. Leptellina tennesseensis Ulrich and Cooper 756 



(9, 10) Brachial and pedicle views, X 2, of the holotype, 92871; (11) brachial 

 interior of the holotype, X 2, showing disk and cardinalia; (12) interior of the 

 pedicle valve, X 2, showing the small muscle area and the pallial trunks, hypo- 

 type, 117452; (13) anterior view of interior of brachial valve of holotype, X 3» 

 showing pallial trunks. 



Arline formation (middle to top), both sides of wagon road in glade, \ mile 

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



D. Leptellina tennesseensis Ulrich and Cooper 756 



(14-17) Respectively posterior, side, brachial, and anterior views of a complete 

 specimen, X 1, hypotype, 108135I1; (18) brachial view of another complete speci- 

 men, X 2, hypotype, io8i35d; (19) pedicle view of a large specimen, X 2, hypo- 

 type, io8i35g; (20) pedicle interior showing pallial marks, X 2, hypotype, 

 108135P; (21) pedicle interior, X 2, tilted to show delthyrial cavity, hypotype, 

 108135m; (22) pedicle interior, X 3, showing exceptional development of pallial 

 marks, hypotype, 108135s; (23-25) anterior, normal, and posterior views of a 

 well-preserved brachial interior, showing pallial marks and cardinalia, X 3> 

 hypotype, 108135-0; (26) anterior of an imperfect brachial interior, X 3, show- 

 ing pallial marks, hypotype, io8i35t; (29) brachial interior, X 2, of the preced- 

 ing; (30) posterior of the preceding, X 3, showing cardinal process and chilidial 

 plates; (27) posterior of a brachial valve, X 3> showing cardinal process and 

 ends of brachiophores, hypotype, 108135U; (28) disk region of another brachial 

 valve, X 3, showing cardinalia, hypotype, 108135c 

 Horizon and locality same as preceding. 



Plate 188 

 Leptellina, Leptelloidea 



A. Leptellina tennesseensis Ulrich and Cooper 756 



(1-4) Respectively anterior, exterior, side, and posterior views of a pedicle valve, 

 X 3, hypotype, 117454a; (11) interior of another pedicle valve, X 3, hypotype, 

 117454b. 



Arline formation (lower), 100 yards southwest of the Negro Cemetery, \ mile 

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



(5-8, 10) Respectively posterior, pedicle, side, anterior, and brachial views of a 

 complete specimen, X 3, hypotype, 117453a; (9) brachial view of another speci- 

 men smaller than the preceding, X 3, hypotype, 117453b. 



Arline formation, 5 miles southeast of Knoxville, on Knoxville-Sevierville 

 Pike, Tenn. 



B. Leptellina sublamcllosa Cooper, new species 755 



(12) Brachial interior showing disk region and cardinalia, X 3, paratype, 117451a. 

 Benbolt formation (base), west side of hill \ mile east of Cedar Point. School, 

 Hilton (T.V.A. 197-NE) Quadrangle, Va. 



C. Leptellina delicahtla (Butts) 749 



(13, 14) Pedicle and brachial views of a complete specimen, X 2, hypotype, 

 117436c 



Little Oak formation, junction of Bailey Gap and main roads, Cahaba Valley, 

 SWiSWi sec. 13, T. 19 S., R. 2 W., 1$ miles northeast of Newhope Church, 

 Vandiver (15') Quadrangle, Ala. 



D. Leptellina sublamellosa Cooper, new species 755 



(15-17, 19, 20) Respectively pedicle, posterior, anterior, brachial, and side views 

 of a complete specimen, X 3, preserving some of the lamellae, paratype, 117449c; 



