﻿1222 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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B. Holtedahlina sulcata ( Verneuil) 879 



(6) Brachial view of a complete specimen, X I, figured specimen, 117747a; (8) 

 brachial interior showing cardinalia, X ii, figured specimen, 117747b. 



Waynesville formation, Oregonia, Ohio. 



(7) Pedicle interior showing dental plates and muscle scars, X 1, figured speci- 

 men, 1 17744. 



Whitewater formation, "Devils Backbone," Camden, Ohio. , 



C. Hesperinia kirki Cooper, new species 822 



(9-13) Respectively pedicle, brachial, anterior, posterior, and side views of a com- 

 plete specimen, X 3, holotype, 117626a; (14) pedicle exterior, X 3, paratype, 

 117626c. 



Tank Hill formation, ridge just east of Monument Canyon, Pioche (i°) Quad- 

 rangle, Nev. 



(15) Brachial interior, X 3, showing cardinalia indistinctly, paratype, 117627a. 

 Tank Hill formation, north end of the west side of Ely Springs Range, High- 

 land Peak (15') Quadrangle, Nev. 



D. Furcitella plicata Cooper, new species 877 



(16) Plasticine replica of the pedicle valve, X 2, prepared from mold, paratype, 

 117750a; (17) impression of the pedicle interior showing muscle scars and slits 

 representing dental plates and their anterior extensions, X 2, counterpart to 

 preceding mold; (18) plasticine replica of the brachial exterior, X 2, showing 

 costellae and shell wrinkles, prepared from mold, holotype, 117750b; (19, 20) 

 impression of the brachial interior, counterpart to the preceding mold, showing 

 slots representing septal ridges and cardinalia, X 2, and the plasticine replica 

 prepared from the brachial mold; (21) impression of a small pedicle interior, 

 X2, showing muscle scars, paratype, 117751a; (22) another pedicle interior 

 impression showing the muscle scars and strong radial shell wrinkles, X 2, 

 paratype, 117750c; (23, 24) impression of an old brachial interior, X 2, and the 

 plasticine replica of the interior prepared from it, X 3, showing cardinalia and 

 muscle area, paratype, 117751b; (25, 26) another impression of the brachial 

 interior and the plasticine replica of the interior prepared from it, X 2, paratype, 

 117751c. 



Oranda formation, in field to north of road, 0.6 mile northwest of Linville 

 Station, Broadway (15') Quadrangle, Va. 



Plate 230 



Macrocoelia, Platymena 



A. Platymena plana Cooper, new species 880 



(1, 10) Respectively Xi and X2 enlargements of the pedicle interior showing 

 the form of the muscle area and its bounding ridges, paratype, 117759a; (2, 3) 

 pedicle and brachial views of a complete specimen, X 1, holotype, . 117759b ; 

 (4, 8) pedicle and brachial views of a small specimen, X i, paratype, 117759c; 

 (5» 7) pedicle and brachial views, X 2, of the preceding specimen; (6, 9) in- 

 terior of two brachial valves showing the cardinalia, X 2, paratypes, H7759d, 

 117759c 



Arline formation, north side of wagon road in glade, \ mile southeast of 

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



B. Platymena ? bellatula Cooper, new species 880 



(11, 12) Pedicle and brachial views, X 2, of the holotype, 117758; (13) brachial 

 view, X 1, of the holotype. 

 Bromide formation (Pooleville member — 162 feet below the massive lime- 



