﻿1 176 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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B. Ptychoglyptus virginiensis Willard 818 



(8) Brachial view of a young specimen showing the concentrated wrinkles and the 

 anterior nonwrinkled region, X 2, hypotype, 117398a; (9) exterior of the pedicle 

 valve showing the same features as the preceding specimen, X 2, hypotype, 

 117398b; (10) brachial interior showing cardinalia and septal ridges, X 3, 

 hypotype, 117398c; (11) posterior edge of the preceding brachial valve, X 5, 

 showing cardinalia; (12) enlargement of the posterior end of the preceding 

 specimen, X 10, showing the cardinalia. 

 Horizon and locality same as preceding. 



C. Glyptambonites glyptus Cooper, new species 713 



(13) Exterior of a small pedicle valve, X 2, paratype, 117387a; (14, 15) interior 

 and exterior of a large pedicle valve, X 3, showing muscle scars, paratype, 

 117387b; (16) exterior of a pedicle valve showing details of the ornamentation, 

 X 4, paratype, 117387c; (17, 21) exterior and posterior of another pedicle valve 

 showing the variable ornamentation and pseudodeltidium, X 3, paratype, H7387d ; 

 (18, 19) interior and posterior of a pedicle valve showing muscle scars and 

 pseudodeltidium, X 5, paratype, 117387c; (20) a young pedicle valve in exterior 

 view, X 4, paratype, 117387^ (22) posterior part of a brachial valve showing 

 septal ridges and cardinalia, X 4, paratype, ii7387g; (23) posterior of the pre- 

 ceding specimen enlarged X 8, showing cardinal process. 

 Horizon and locality same as preceding. 



D. Paucicostella canadensis Cooper, new species 712 



(24) Pedicle exterior, X 3, paratype, 117394b. 



Table Head series (upper), Table Point Cove, Newfoundland. 



E. Strophomcna crinerensis Cooper, new species 934 



(25-29) Respectively posterior, anterior, side, pedicle, and brachial views of a 

 nearly perfect specimen, X 1, holotype, 117718; (30) exterior of the pedicle 

 valve X 2, showing details of the ornamentation. 



Bromide formation (Pooleville member), cobbly, light-colored limestone di- 

 rectly above the green shale band, Spring Creek, N£ sec. 17, T. 2 S., R. I W., 

 Murray County, Okla. 



F. Macrocoelia duplistriata (Willard) 893 



(31) Exterior of a somewhat exfoliated pedicle valve, X I, hypotype, 117768. 



Lincolnshire formation (Hogskin member), 0.4 mile northeast of Red Hill, 

 4! miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- 

 rangle, Tenn. 



G. Limbimurina brevilimbata Cooper, new species 852 



(32, 33) Pedicle and side views of a large specimen, X I> paratype, 117661a; (34) 

 pedicle view of the same specimen, X 2, showing the frill and wrinkled 

 ornamentation. 



Botetourt formation (0 to 10 feet of limestone beneath the Botetourt granu- 

 lar bed), in the field on the south side of the road, 0.2 mile east of Strasburg 

 Junction, Strasburg (15') Quadrangle, Va. 



Plate 174 

 Ptychoglyptus 



A. Ptychoglyptus virginiensis Willard 818 



(1, 2) Interiors of two brachial valves showing cardinalia and varying degrees 

 of thickening of adductor area, X 3, hypotypes, 123285b, 123285c. 



Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15') Quad- 

 rangle, Ala. 



