﻿1 126 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 



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 (7) enlarged view of spondylium of same specimen, X 4, showing folding over 

 of anterior end. 



Horizon and locality same as preceding. 



C. Stenocamara perplexa Cooper, new species 603 



(8) Posterior of a small specimen showing the dental plates of the pedicle valve 

 and the median septum of the brachial valve, X 2, paratype, 11 1322. Photograph 

 taken under water. 



Mosheim formation, £ mile east of Odenville, Springville (30') Quadrangle, 

 Ala. 



D. Protozyga exigua (Hall) 678 



(9-12, 14) Respectively posterior, side, pedicle, brachial, and anterior views of a 

 complete specimen, X 2, hypotype, 117242c; (13) the same specimen, X i. 



Rockland formation (Napanee member), just west of the Mill Creek bridge 

 in the city of Lowville, Lowville (15') Quadrangle, N. Y. 



E. Brevicamera camerata Cooper, new species 561 



(15) Exterior of a nearly perfect brachial valve, X 2, holotype, 117154c; (16) 

 interior of the same specimen, X 4, showing the cardinalia in detail. 

 Horizon and locality same as A above. 



F. Parallelclasma pentagonum Cooper, new species 614 



(17, 18) Side and posterior views of the apical end of a specimen with both valves 

 in contact, X 3, paratype, 117156c; (19, 22, 23) side and interior views of a frag- 

 mentary pedicle valve showing spondylium, teeth, and sockets outside the teeth, 

 X8, X4, X8, paratype, H7is6g; (20) exterior of a nearly complete pedicle 

 valve, X 2, paratype, 117156c; (21) interior of another pedicle valve, X 2, 

 showing form of spondylium, paratype, 117156J ; (24, 31) respectively X4 and 

 X 8 views of another pedicle interior showing the spondylium in normal and 

 side views, and the side view showing the socket on the inside of the tooth, 

 paratype, 117156b; (25) fragment of anterior part of a specimen with both 

 valves in contact and showing the strainer "webs" between the ends of the 

 costae, X3, paratype, H7is6f; (26) fragment of a brachial interior showing 

 short, blunt brachiophore and supporting plate, X 8, paratype, 117156^; (27, 28) 

 respectively X 4 and X 8 views of the brachial interior showing brachiophores, 

 accessory teeth on brachiophores, and sockets, holotype, 117156-I; (29) same in 

 side view, X 8 ; (30) interior of another brachial valve showing sockets, brachio- 

 phores and their supporting plates, X 8, paratype, 117156a. 

 Horizon and locality same as A above. 



Plate 120 



DlDYMELASMA, NeOSTROPHIA 



A. Neostrophia ? gregaria Cooper, new species 590 



(1, 2) Brachial and pedicle views of a complete specimen showing the median 

 septum, X2, paratype, 111310a; (3-6) respectively anterior, side, posterior, 

 and brachial views of a complete specimen, X 2, holotype, 111310b. 



Bromide formation (Pooleville member — Oxoplecia gouldi zone), Rock Cross- 

 ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner 

 Hills, Carter County, Okla. 



B. Neostrophia subcostata Ulrich and Cooper 591 



(7, 10, 12) Anterior, pedicle, and side views of a complete specimen, X 2, paratype, 

 66309b ; (8, 9) side and posterior views of a young specimen, X 2, paratype, 

 66309c; (11, 13, 15) respectively anterior, posterior, and brachial views, X 2, 

 of the holotype, 66309a; (14) brachial view of an adult specimen, showing ante- 

 rior costation, X 2, paratype, 66309^ (16) posterior of a polished specimen 



