﻿1242 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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B. Strophomcna okulitchi Cooper, new name 943 



(3) Exterior of an exfoliated pedicle valve, X l, McGill Univ., holotype (no num- 

 ber) ; (4) part of exfoliated exterior of preceding enlarged X 4 to show pseudo- 

 punctae pits arranged in radial rows as in Rafinesquina. 

 Leray = Chaumont formation, St. Vincent de Paul, Quebec, Canada. 



C. Furcitella scoficldi (Winchell and Schuchert) 878 



(5) Interior of the brachial valve showing the forked septum, X 2, hypotype, 

 117749b; (6) interior of the pedicle valve, X 2, showing the muscle marks, 

 hypotype, 117749a. 



Prosser formation (Vellamo bed), St. Paul, Minn. 



D. Pionomena neumani Cooper, new species 902 



(7) Exterior of an imperfect brachial valve, X 2, paratype, 117756c; (9) exterior 

 of another but smaller brachial valve, X 2, paratype, H7756d; (10) exterior of 

 the pedicle valve, X 2, holotype, 117756a; (11) small slab, X 1, showing the 

 holotype and two paratypes, the pedicle valve to the northeast being 117756b. 



New Market formation (top 12 feet), i mile southwest of Hicksville, 

 Williamsport (15') Quadrangle, Md. 



(8) Imperfect pedicle valve showing interarea, tooth, and long dental plate on 

 observer's left side, X 3, paratype, 1 17755. 



New Market formation | mile north of St. Pauls Church, west of Wilson, 

 Williamsport (15') Quadrangle, Md. 



Plate 266 

 Platymena, Rafinesquina 



A. Rafinesquina planulata Cooper, new species 886 



(1) Plasticine replica of the brachial interior, X 3, paratype, 123281J ; (2) impres- 

 sion of the brachial interior, X 2, showing slots produced by brachiophores, para- 

 type, 123281c; (3, 4) impressions of two pedicle interiors on which the exte- 

 rior ornamentation has been superimposed, X 2, paratype, I2328if, and holotype, 

 123281a. 



Oranda formation, 0.6 mile northwest of Linville Station, Broadway (15') 

 Quadrangle, Va. 



B. Rafinesquina sinclairi Salmon 887 



(5) Impression of the pedicle interior, showing form of muscle area and slots 

 representing thickened area bearing the teeth, X 1, hypotype, 117858b; (7) 

 anterior portion of the preceding specimen, X 2, showing pseudopunctae arranged 

 in radial rows; (6) exterior of the pedicle valve, X I, hypotype, 117858a. 

 Auburn chert, \ mile east of Auburn, Elsberry (15') Quadrangle, Mo. 



C. Rafinesquina sinclairi Salmon 887 



(8, 9) Pedicle and brachial views of a complete specimen, X 1, showing alate 

 cardinal extremities, hypotype, 11 7859. 



Barnhart formation, at the Koch Valley School on U. S. Highway .61, NE. 

 corner SW^SW| sec. 6, T. 41 N., R. 6 E., 2 miles south of Barnhart, Kimms- 

 wick (15') Quadrangle, Mo. 



D. Platymena plana Cooper, new species 880 



(10-13) Respectively pedicle, anterior, brachial, and side views, X 1, of the para- 

 type, 117760c; (14) a specimen seen from the pedicle side but from which the 

 pedicle valve has been mostly stripped to show the brachial cardinalia, X 4, para- 

 type, ii776od; (15) brachial view, X 2, of another paratype, 117760b; (16) 

 pedicle view, X 2, of a paratype, 117760a. 



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

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



