Py ut 4 
iY crea eat ok wih) Le Ath pe mi Ahi ity 
Balas ha PLATE IX.— (Continued.) pene 
% i ; \ ; ’ ¢ y 7. ‘ 
PLATYSTROPHIA BIFORATA (Schl. ys s Ree RE ie 
Figs. 25-28. Brachial, pedicle, lateral and anterior views Ag a mnie 
specimen. Near Beaver Run, Locality 79 A. 
; DINORTHIS PECTINELLA (Hmm.)........ i ze Spo ee esis 
Fig. 29. A pedicle valve. Drake’s Pond, near Newton, Locality 
136 B. s 
30. A brachial valve. Same locality. 
(400) 
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