﻿1 124 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 



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C. Camerclla sp. 3 586 



O3-17) Respectively posterior, anterior, side, brachial, and pedicle views, X 2, of 

 the figured specimen, 117151 ; (18) brachial view, X I, of same. 



Eureka group (yellow beds above 25-foot sandstone), in saddle just north of 

 hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (i°) Quadrangle, 

 Nev. 



D. Parastrophina hemiplicata ( Hall ) 606 



(19-23) Respectively brachial, side, pedicle, anterior, and posterior views of a com- 

 plete specimen, X 1, hypotype, 117168a. 



Martinsburg formation (part with Brongniartella and referable to Salona 

 formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green 

 Mount Church, Broadway (15') Quadrangle, Va. 

 (24-27) Respectively brachial, side, anterior, and pedicle views of another com- 

 plete specimen, X I, hypotype, 11 1324. 



Martinsburg formation (part with Brongniartella and referable to Salona 

 formation), about 14 miles northwest of Staunton, Va. 



E. Perimecocoelia scmicostata Cooper, new species 594 



(28-32) Respectively posterior, anterior, side, brachial, and pedicle views of a com- 

 plete specimen, X I, paratype, 111333b; (33-37) brachial, posterior, side, ante- 

 rior, and pedicle views, X 2, of the preceding specimen; (43-45) respectively 

 pedicle, side, and brachial views of a young specimen, X 1, paratype, 111336b; 

 (46-50) respectively posterior, anterior, side, pedicle, and brachial views of a 

 small specimen, X 1, paratype, 111334b. 



Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady 

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



(38-42) Respectively brachial, pedicle, anterior, side, and posterior views, X 1, of 

 a paratype, 11 1338. 



Effna formation, Tilson Mill, 16 miles northeast of Marion, Va. 



(51) Brachial interior showing elongate cruralium, X 4, paratype, 111347a. 



Edinburg formation (base of Liberty Hall facies), 1.8 miles S. 4 W. of 

 Bethel Church, 5.9 miles due east of Harrisonburg, Harrisonburg (15') Quad- 

 rangle, Va. 



F. Perimecocoelia scmicostata Cooper, new species 594 



(5 2 , 53) Respectively X 1 and X 2 enlargements of a pedicle valve, paratype, 

 118013b; (54) another pedicle valve, X I, paratype, 118013d; (55, 56) exterior 

 and side view, X 1, of brachial valve, paratype, 118013c; (57) brachial exterior, 

 X 2, paratype, n8oi3f; (58, 59) respectively brachial interior in normal view 

 and tilted, showing elongate cruralium and adductor muscle scars on each side 

 of the septum, X 2, paratype, 111328c. 



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

 Quadrangle, Ala. 



Plate 118 



Brevicamera, Camerella, Parallelelasma, Parastrophina 



A. Brevicamera camerata Cooper, new species 561 



(1-4) Side, anterior, exterior, and interior views of the pedicle valve, X 2, para- 

 type, 117154a; (5-7) exterior, side, and interior views of the brachial valve, X 2, 

 paratype, 117154b; (8, 9) brachial interior tilted and in normal view, X 3, show- 

 ing sessile cruralium and cardinalia of the same paratype; (10) cruralium, 

 ca. X 4- 



Pratt Ferry formation (about 3 feet above the base), 0.2 mile southeast of 

 Pratt Ferry, Blocton (15') Quadrangle, Ala. 



