﻿1088 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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 Lenoir formation, small quarry between the Southern RR. tracks and U. S. 

 Highway II, ii miles southwest of Philadelphia, Philadelphia (T.V.A. 

 131-NW) Quadrangle, Tenn. 



B. Valcourea transversa Cooper, new species 413 



(11-13) Respectively brachial, pedicle, and posterior views of a complete specimen, 

 X i» paratype, 110277b; (14) pedicle view of same, X 2, showing ornamentation. 

 Bromide formation (Mountain Lake member — small Valcourea bed), along 

 U. S. Highway 77, NEi sec. 25, T. 2 S., R. 1 E., Carter County, Okla. 



C. Chaulistomella mundula Cooper, new species 440 



(15) Brachial interior, X h paratype, 110442a; (16, 17) interior and exterior of 

 the pedicle valve, X I, paratype, 110442b. 



Bromide formation (Mountain Lake member), deep well on Jones Farm, 

 sec. 22, T. 5 N., R. 3 E., Midcontinent Petroleum Corporation, Pottawatomie 

 County, Okla. 



D. Valcourea tenuis Cooper, new species 412 



(18, 19) Brachial and pedicle views of a young alate specimen, X 2, paratype, 



116970a; (22, 23, 26) respectively X 2 and X 1 enlargements of pedicle exterior 

 and interior, paratype, 116970b; (28) brachial interior, X 4, paratype, n697oi; 

 (24) brachial interior, X 3, paratype, n697od; (20, 21) brachial and pedicle 

 views, X 3, holotype, 116970c; (25) pedicle interior showing muscle area, X 2, 

 paratype, 116970J; (27) small pedicle interior, X 3, paratype, n697of; (29) 

 brachial interior of a broken specimen, X 3, showing cardinalia, paratype, 

 n6970g. 



Tulip Creek formation (152 feet above basal sand), in first creek east of U. S. 

 Highway 77, SE^NE| sec. 25, T. 2 S., R. 1 E., Carter County, Okla. 



Plate 77 

 Eremotoechia, Tritoechia 



A. Tritoechia typica (Ulrich) 512 



(1) Pedicle interior tipped to show dental plates, X 1. hypotype, 92985c; (7) nor- 

 mal interior view, X 1, of same; (2) brachial interior of an old specimen, show- 

 ing internal thickenings, X 2, hypotype, 92985J ; (3) brachial interior of a fully 

 grown specimen, X 1, hypotype, 92985^ (5, 8) posterior and exterior views of 



the pedicle valve, X I, hypotype, 92985b. 



Kindblade formation, 6 miles west-northwest of Ravia, Johnston County, 

 Okla. 

 (4) Brachial exterior, X 2, showing swollen costellae, hypotype, 9i75od; (6) 

 posterior view of pedicle valve showing finely costellate interarea, X 2, hypotype, 

 91750k; (9) brachial interior of a normal specimen showing median ridge and 

 cardinalia, X 2, hypotype, 9l750g. 



Kindblade formation, 7 miles northeast of Berwyn, SE. corner sec: 6, T. 3 S., 

 R. 4 E., Johnston County, Okla. 



B. Eremotoechia cloudi Cooper, new species 514 



(10-14) Respectively brachial, pedicle, side, posterior, and anterior views of a 

 somewhat exfoliated specimen, X l, paratype, 117062; (15) posterior view, X 2, 

 showing pseudodeltidium, of the same specimen. 



Arline formation (near middle), 1 mile southeast of Fowlers Mill, 10 miles 

 southeast of Loudon, Tenn. 



C. Eremotoechia cloudi Cooper, new species 514 



(16-20) Respectively anterior, posterior, pedicle, brachial, and side views, X I, of 

 the holotype, 117061a; (21) pedicle interior, X I, of the holotype; (22) same, 

 X 2, tilted to show dental plates; (23) brachial interior of holotype, X 2, show- 

 ing peculiar cardinalia, somewhat reminiscent of Tritoechia above; (24) bra- 



