﻿I2l8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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 and complete specimen, X 2, holotype, 117619a; (7) brachial interior showing 

 cardinalia, X 2, paratype, 117619b. 



Edinburg formation (Cyrtonotella zone), ravine at switch, £ mile east of 

 Strasburg Junction, Strasburg (15') Quadrangle, Va. 

 (6) Brachial interior, X 3, paratype, 117616a. 



Shippensburg formation (150 to 200 feet above the base), railroad cut 2\ miles 

 southwest of Marion, Chambersburg (15') Quadrangle, Pa. 

 (8) Impression of the pedicle interior showing the muscle area, X 3, paratype, 

 117614a. 



Shippensburg formation (nodular shaly zone below Nidulitcs), road cut on 

 U. S. Highway 40, just west of Conococheague Creek, 7 miles west of Hagers- 

 town, Williamsport (15') Quadrangle, Md. 



B. Cyphomena homostriata (Butts) 843 



(9-1 1 ) Side, pedicle, and brachial views, X 2, of the holotype, 97545. 



Oranda formation, along the railroad \ mile west of Strasburg, Strasburg 

 (15') Quadrangle, Va. 

 (12, 13) Brachial and pedicle views of a small specimen, X 2, hypotype, 1 17622. 

 Oranda formation, west side of U. S. Highway 11, about 1 mile southwest 

 of Strasburg, Strasburg (15') Quadrangle, Va. 

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

 complete specimen, X 2, hypotype, 117623a; (19) brachial view, X 1, of the 

 preceding specimen. 



Oranda formation, Shenandoah River, i^ miles N. 61 ° E. of Edinburg, Edin- 

 burg (15') Quadrangle, Va. 

 (20) Brachial interior, X 2, showing cardinalia and ridges, hypotype, 117615. 



Oranda formation, if miles west of Kauffman and 3^ miles north of Green- 

 castle, Chambersburg (15') Quadrangle, Pa. 



C. Cyphomena angnlata Cooper, new species 841 



(21, 22) Impression of the brachial interior and a plasticine replica prepared from 

 it, X2, paratype, 11 76 18. 



Shippensburg formation (base of Nididites zone), road cut on U. S. High- 

 way 40, west bank of Conococheague Creek, 7 miles west of Hagerstown, 

 Williamsport (15') Quadrangle, Md. 



D. Cyphomena grandis Cooper, new species 842 



(23-27) Respectively anterior, postero-pedicle, pedicle, side, and posterior views 

 of a small but complete specimen, X I, holotype, 117621a; (35, 36) respectively 

 Xi and X2 enlargements of the preceding specimen; (28-32) respectively 

 postero-pedicle, partial-anterior, pedicle, side, and anterior views of a large 

 and strongly geniculated pedicle valve, X 1, paratype, 117621b; (33, 34) 

 respectively X I and X 2 enlargements of a complete individual, paratype, 

 I I 7620. 



Martinsburg formation (part with Brongniartella and referable to the Salona 

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

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



Plate 225 

 Dactylogonia, Teratelasma 



A. Dactylogonia magnifica Cooper, new species 830 



(1, 3) Interior and exterior of the pedicle valve, X 2, showing pseudodeltidium, 

 foramen, and muscle marks, holotype, 117942a; (2) exterior of the brachial 

 valve, X 2, paratype, 1179426.; (4) interior of the brachial valve, X 4» showing 

 adductor ridges and cardinalia, paratype, 117942c. 



