﻿IO58 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



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 Shippensburg formation (Pinesburg member — shaly beds between Echino- 

 sphaerites and lower Nidulites zones), railroad cut 1.7 miles southwest of 

 Marion, Chambersburg (15') Quadrangle, Pa. 



C. Orthambonites angulatus Cooper, new species 294 



(19, 20) Exterior and interior of a large pedicle valve, X 1, holotype, 109797. 

 Probably Arline formation, James Wayland Farm near Riverdale, 9 miles 

 east of Knoxville, Shooks Gap (T.V.A. 147-NE) Quadrangle, Tenn. 



D. Orthambonites buttsi (Schuchert and Cooper) 300 



(21, 25, 28, 29) Pedicle, posterior, brachial, and side views of a large specimen, 

 X ij hypotype, 109808a; (27) brachial view, X 2, of preceding specimen; 

 (22, 31) respectively X 1 and X2 enlargements of the brachial interior, hypo- 

 type, 116870b; (23, 26) pedicle interior, respectively X2 and X 1, hypotype, 

 116870c; (30) exterior, X ii, of same; (24) brachial view of a complete speci- 

 men, X I, hypotype, 116870a. 



Little Oak formation, intersection Bailey Gap road with main road, SW^SW^ 

 sec. 13, T. 19 S., R. 2 W., if miles northeast of Newhope Church, Vandiver 

 (15') Quadrangle, Ala. 



E. Orthambonites brachiophorus Cooper, new species 298 



(32, 33) Imperfect brachial valve, respectively tilted to side and seen in normal 

 view to show long brachial processes, X 2, paratype, 109835a ; (34, 39) pedicle 

 exterior, X 1 and X 2, holotype, 109835c; (35) brachial exterior, X I, paratype, 

 I09835d; (36) pedicle interior showing muscle area and pallial trunks, X 1, 

 paratype, I09835f ; (37, 38) respectively X 2 and X 1 enlargement of a brachial 

 valve, paratype, 109835b. 



Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, 

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



Plate 37 



mlmella, onniella, orthambonites 



A. Mimella superba Butts = M. globosa (Willard) 472 



(1-4) Respectively pedicle, anterior, brachial, and side views of the type specimen 

 of Mimella superba Butts, X I, hypotype, of M. mclonica (Willard), 98210. 



Probably Benbolt formation, Rye Cove, Clinchport (T.V.A. 188-NW) Quad- 

 rangle, Va. 



B. Mimella virginiensis Cooper, new species 487 



(5-7) Respectively side, pedicle, and brachial views, X I, of the holotype, 98188a. 

 Whistle Creek formation, along Whistle Creek, 2 miles northwest of 

 Lexington, Lexington (15') Quadrangle, Va. 



C. Onniella ? amcricana Cooper, new species 953 



(8-12) Respectively brachial, side, posterior, anterior, and pedicle views, of the 

 holotype, X I, 116964a; (13-14) respectively X 1 and X2 views of the pedicle 

 exterior of another specimen, paratype, 116964b. 



Lower Hermitage formation, along Tennessee Highway 53, 1 to i\ miles 

 south-southeast of Woodbury, Woodbury (15') Quadrangle, Tenn. 



D. Orthambonites ncumani Cooper, new species 307 



(15, 16) Plasticine replicas of the exterior of the pedicle valve, X I, paratypes, 

 116874b and 116874-0; (17, 18) plasticine replicas of two brachial exteriors, X 1, 

 paratypes, n6874d and n6874q; (19, 20) respectively the impression of the bra- 

 chial interior and a plasticine replica of the interior prepared from it, X I, para- 

 type, n6874d. This is the inner counterpart to the exterior shown in fig. 17; 

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

 from it, X 1, paratype, 116874-I; (23, 24) another impression of the interior of 



