﻿1074 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 12J 



Plate 55 



scaphorthis 



Page 



A. Scaphorthis wrginiensis Cooper, new species 505 



(1, 2) Respectively X 2 and X 1 enlargement of a brachial valve, paratype, 

 111788c; (3, 5, 6) respectively pedicle, side, and brachial views of a small but 

 complete specimen, X 1, paratype, 111788a; (4) pedicle exterior, X 1, paratype, 

 116903a; (7, 8) brachial interior tilted to show cardinalia and in normal view, 

 X 2, holotype, 116903c; (9) pedicle interior showing thickened and wide ad- 

 ductor track, X 2, paratype, 116903b; (10) posterior of the brachial interior 

 showing cardinalia, X 3, paratype, 111788c; (11) pedicle exterior, X 1, paratype, 

 116903c 



Chatham Hill formation, 1.2 miles S. 31 ° E. of Sharon Springs, on north slope 

 of Walker Mountain, Burkes Garden (15') Quadrangle, Va. 



B. Scaphorthis pcrplexa Cooper, new species 504 



(12) Pedicle interior, X 2, paratype, m8o2d; (13-17) respectively pedicle, side, 

 anterior, posterior, and brachial views, X 2, of the holotype, 111802c; (18, 19) 

 pedicle and brachial views of a smaller complete individual, X 2, paratype, 

 111802k; (20) pedicle interior, X 2, paratype, iu8o2t; (22) brachial interior, 

 X 3, paratype, 111802-I; (21) brachial interior, X 2, paratype, ni8o2u; (23) 

 another brachial interior with cardinal process, X 2, paratype, 111802s; (24-26) 

 three views of the same specimen, an old individual showing thickening around 

 the muscle area, X 4, paratype, m8o2r. 



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

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



C. Scaphorthis sp. 1 506 



(27-29) Pedicle, brachial, and side views, X 2, figured specimen, 116908a. 

 Horizon and locality same as preceding. 



D. Scaphorthis kayi Cooper, new species 503 



(31-35) Respectively brachial, posterior, anterior, side, and pedicle views of an 

 exceptionally well preserved individual, X 1, holotype, n 1787. 



Lower Edinburg formation, \ mile nearly north of Glendale School, 500 to 

 600 feet S. 70 W., of farmhouse at end of lane, Winchester (15') Quadrangle, 

 Va. 

 (36, 37) Respectively X 1 and X 2 enlargements of a brachial interior, paratype, 

 1 16905. 



Lower Edinburg formation (Cyrtonotella zone), 10 to 20 feet above sandy bed, 

 500 feet southeast of U. S. Highway 11, 1 mile northeast of Toms Brook, 

 Strasburg (15') Quadrangle, Va. 

 (30) Brachial exterior, X 1, paratype, 116907a; (38, 39) respectively X2 and 

 X 1 enlargement of an impression of the pedicle interior, showing pallial trunks, 

 paratype, n6907d. 



Lower Edinburg formation, \ mile north-northeast of Glendale School, Win- 

 chester (15') Quadrangle, Va. 

 (40) Pedicle exterior, X I, paratype, 116906a; (41) enlargement, X 3, of left side 

 of the preceding specimen. 



Shippensburg formation, if miles west of Kauffman and 3^ miles north of 

 Greencastle, Chambersburg (15') Quadrangle, Pa. 



Plate 56 



MULTICOSTELLA, PrODUCTORTHIS 



A. Productorthis americana Cooper, new species 336 



(1-4) Respectively posterior, pedicle, brachial, and side views, X I, of the 



