﻿1 142 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I27 



Page 



F. Rostricellula wilsonae Cooper, new species 655 



(36-39) Respectively anterior, side, pedicle, and brachial views of a somewhat 

 laterally compressed specimen, X I, paratype, 117234b; (40-44) respectively 

 anterior, pedicle, brachial, side, and posterior views of a complete specimen, X i> 

 holotype, 117234a; (45-48) respectively brachial, side, anterior, and pedicle 

 views, X 2, of the preceding specimen. 



Aylmer formation (Rockcliffe member), 2 miles south of Rockland, Ontario, 

 Canada. 



Plate 136 



Rostricellula 



A. Rostricellula cuneiformis (Fenton and Fenton) 637 



(1-4) Respectively side, posterior, anterior, and pedicle views of a complete speci- 

 men, X 1, hypotype, ui484g; (5) brachial view of a complete specimen, X I, 

 showing foramen, hypotype, 111484!; (6-9) respectively posterior, pedicle, bra- 

 chial, and side views, X 2, of the preceding specimen; (10, 11) pedicle and ante- 

 rior views of a specimen slightly wider than the preceding, X 1, hypotype, 

 111484-0; (12-15) pedicle, anterior, side, and brachial views of a young specimen, 

 X 2, hypotype, 111484U; (16) pedicle interior showing adductor field, X 2, 

 hypotype, 111484^ (17) pedicle interior showing dental plates, X 2, hypotype, 

 111484a; (18) pedicle interior with part of brachial valve adhering and showing 

 the long crural process from the brachial side, X 1, hypotype, ni484q; (19) 

 same view as the preceding of another specimen, X 2, showing the brachial view 

 of the crura, hypotype, 111484c; (20, 21) respectively X 1 and X2 views of 

 the brachial interior showing median septum and cruralium, hypotype, ni484d; 

 (22) fine brachial interior showing cardinalia, X 2, hypotype, 111484P. 



Barnhart (or Macy) formation, on the old road 1 mile northwest of the Chi- 

 cago Summer School Camp, NW^SWi sec. 32, T. 37 N., R. 9 E., Weingarten 

 (15') Quadrangle, Mo. 



B. Rostricellula rostrata Ulrich and Cooper 648 



(23-26) Respectively pedicle, anterior, posterior, and side views of a small speci- 

 men, X 1, hypotype, 111531a; (27-29) side, pedicle, and brachial views, Xii 

 of the preceding specimen; (30-34) respectively posterior, anterior, pedicle, side, 

 and brachial views of a complete specimen, X 1, hypotype, 111531b. 



Dryden formation, on old road from Lone Mountain to Tazewell, ii miles 

 northeast of Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. 



C. Rostricellula rostrata Ulrich and Cooper 648 



(35. 36) Pedicle and brachial views, X h of the holotype, 108205a ; (42) view of 

 the pedicle beak of the holotype, X 4, showing ridges on sides of delthyrium ; 

 (37. 38) side and posterior views, X 1, of a large paratype, 108205c; (39, 40) 

 anterior and pedicle views, X I, of another paratype, 108205b; (49) side of the 

 preceding enlarged, X 6, to show fine ornamentation ; (41 ) pedicle interior tilted 

 to show dental plates, X 2, paratype, 108205I1; (44, 45) posterior part of brachial 

 valve tilted and in normal view, X 4, to show the cruralium, median septum, and 

 long crural process, hypotype, 111535; (46) another brachial interior showing 

 the long crural process and cruralium, X 4, paratype, io8205d. 



Wardell formation, 7 miles southwest of Clinton, Clinton (T.V.A. 137-SW) 

 Quadrangle, Tenn. 

 (43) Pedicle interior showing dental plates, X 3, hypotype, 111541a; (47) brachial 

 interior, X 2, hypotype, 111541b; (48) brachial view of a young specimen, X 2, 

 hypotype, 111541c. 



Dryden formation, 1% miles northeast of Loyston, Maynardville (15') Quad- 

 rangle, Tenn. 



