PLATE IX— Continued. 



( IRENIPECTEN AMPLU8. 

 Page - 1 . 

 Fig. 9. A left valve showing the cartilage pits along the hinge. The posterior ear as represented is 



long, giving the figure the aspect of the light valve. 

 Fig. 13. A large left valve. The figure should be extended fully 3 nun. on the posterior side to correspond 



with the specin 



Fig. 18. An imperfect specimen, somewhat distorted from pressure, and referred to this Bpecies with some 

 doubt. 



Chemung group, RockvUle, iV. F. 



LyRIOFECTEN FASC1ATUS. 

 Page 55. 

 Fig. 10. An imperfect left valve. 



Fig. 11. An i-nlargemeut of a portion of the surface showing the fasciculate radii and concentric striae. 

 Chemung group. Leon, Cattaraugus Co., N. Y. 



Crenipectex Leon. 



Page 88. 

 Plate 83. 



Fig 12. A left valve of this species. Another figure of this specimen is given on plate 83 showing re 



correctlj the characters of the binge and the form of the \al\e. 

 Chemung group. /.(>•». Cattaraugus Co., N. V. 



( 'REXIPECTEN IMPOLITl's. 



Paee B3. 



See Plan- 83. 



Fig. 14. A large left valve showing the form and proportions of this species. The specimen preserves 



traces of distant radiating lines which are not represented in the figure. 



< 'Ip 'i iup. Okiiii. N. Y. 



Crexipecten obsoletus. 



Page st. 

 L9, 21. Left and right valves. Fig. '21 is from the original specimen of the species. 

 Chemung group. Philipsburg, N. Y. 



Orexipecten glaber. 



Page 85. 

 Fig. 20. A view of the original specimen of fig. 10, p. 264, Geolog. Kept. Fourth Dist. X. V. is4:i. 



Fig. l'J. A larger specimen referred with soi loubt to this specimen. 



Chemung group. Alleghany Co., IV". Y. 



Crexipecten microptertjs. 



Page 86. 

 Ki^r. 'Si. A right valve showing the form and surface characters. 

 Chemung group. PMlipsburg, ZV. Y. 



Crenipecten liratus. 



Page 87. 



See Plate 83. 



Fig. 24. A left valve. Another figure of this specimen is given on plate 83, toshow the size of the ears as 



preserved in the specimen. 



Chemung group. Bast Randolph, N. Y. 



