﻿1 198 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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 spectively brachial, posterior, anterior, and side views, X 2, of the same hypo- 

 type; (8) brachial view of a complete specimen, X 2, hypotype, H749ii; (9) 

 brachial view of an obese individual, X 2, hypotype, 117491b; (10) interior of 

 the pedicle valve showing the long diductor scars, X 2, hypotype, H749ig; (11) 

 brachial interior, X 2, showing cardinalia and muscle scars, hypotype, 117401c; 

 (12, 13) respectively X2 and X3 views of a very perfect brachial interior 

 showing the cardinalia and pallial marks, hypotype, 1 17491b. 



Martinsburg formation (base), on Tennessee Highway 33, about \ mile south 

 of Rose Hill and sh miles northeast of Maynardville, Maynardville (T.V.A. 

 Quadrangle, Tenn. 



B. Sowerbyella lebanonensis Bassler 782 



(14-18) Respectively brachial, anterior, pedicle, side and posterior views of a com- 

 plete specimen, X 2, hypotype, 117494a; (23, 24) brachial interiors showing 

 cardinalia, muscle marks, and anterior thickening, X 2, hypotypes, 1 17494b, 

 117494c. 



Lebanon formation, cut on U. S. Highway 41, 2.1 miles north of the Bedford 

 County line in Rutherford County, Tenn. 



(19) Exterior of the pedicle valve, X 2, lectotype, 80487a; (22) brachial interior 

 of a young specimen, X 2, paratype, 80487b; (25) small slab showing two 

 brachial interiors, X 3, showing cardinal process and septa, hypotype, 117495a. 



Lebanon formation, Shelbyville, Bedford County, Tenn. 



(20) Brachial exterior of a specimen having prominent wrinkles on the posterior 

 margin, X 2, hypotype, 117497c. 



Lebanon formation, near Prospect, Giles County, Tenn. 



(21) Interior of the pedicle valve showing median ridge and muscle area, X 2, 

 hypotype, 117496a. 



Lebanon formation, Columbia, Maury County, Tenn. 



Plate 202 

 sowerbyella 



A. Sowerbyella compacta Cooper, new species 778 



(1) Pedicle view of a complete specimen, X 1, paratype, 11 7490; (2-6) respec- 

 tively brachial, pedicle, anterior, side, and posterior views, X 2, of the same 

 specimen. 



Benbolt formation (basal 20 feet with Echinosphaerites) , \ mile east of Speers 

 Ferry, Clinchport (T.V.A. 188-NW) Quadrangle, Va. 

 (7) Interior of the pedicle valve, X 2, showing pallial marks, paratype, 117483b; 

 (8) brachial interior showing cardinalia, X 2, paratype, 117483c. 



Dryden formation, Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, 

 Tenn. 



B. Sowerbyella parva Cooper, new species 789 



(9, 11) Side and brachial views of a complete specimen, X 2, paratype, 117507b; 

 (10, 12, 13) brachial, posterior, and anterior views of a complete specimen, X 2, 

 holotype, 117507a; (14) interior of the pedicle valve, X 3, paratype, 117507c; 

 (15) interior of the brachial valve, X 3, showing septa and cardinalia, paratype, 

 U7507d. 



Ward Cove formation, small cemetery about f mile north of Rye Cove, 

 Clinchport (T.V.A. 188-NW) Quadrangle, Tenn. 



C. Sowerbyella vulgata Cooper, new species 801 



(16-20) Respectively brachial, anterior, side, posterior, and pedicle views of a com- 

 plete specimen, X 2, paratype, 117542a; (22) ornamentation of brachial valve, 

 X 6, of preceding specimen; (21) brachial interior showing cardinalia and 



