X 



70,40. Specimen 2-9 is another fossil. (E. W. C.) Of spec. 18-21 he has 



no record. He has no recollection of finding Avicula triquetra 



anywhere, and does not believe that it exists at the two localities 



quoted. 



71, 2. For Avicula — ? Rogers, fig. 663, read Actinodesma. (R. P. W.) 



71, 18. For Avicula ? Rogers, fig. 678, read Leptodesma. (J.H.) 



71,26. For Avicula ? Rogers, fig. 679, read Ptycopteria. See Hall's 



Pal. N. Y. Vol. V, part 1, plate 23. (R. P. W. and J. H.) 

 71, 40. Add, /See Appendix. 



73, 18. Insert Aviculopecten caroli. {Crenipecten caroli.) See Aj^pen- 



dix. (J. H.) 



74, 8. For Aviculopecten, read Lunuli car dium fragile (J. H.; H. S. 



W. ) LunuUcardia fragilis. (R. P. W.) 



75, 15. Meek afterwards took back his Permian. (J. J. S.) 

 75, 22, For Lyrispecten read Ijyriopecten. 



75, 23. For Aviculopecten pectiniformis, read Pterinea clieniungen- 



sis, Conrad. Pal. N. Y. Vol. 5, part 1, plate 16, fig. 10 drawn from 

 the same specimen which furnished the large figure (117 Hall) 

 here given. (R. P. W.) 



76, 27. Figure upside down. 



77, 1. For Aviculopecten read Pterinopecten suborbicularis, Hall. 



Pal. N. Y. Vol. 5, part 1, plate 8. (R. P. W.) 

 77, 10. For Cussegago, read Cussewago. 

 77, 14. For Hubbieville, read Hobbieville. 



77, 15. For Whiteii, read Wliitci. (E. W. C.) 



78, 2. Portage? (J. J. S.) 



78, 9. YoY StiHctorhyyichus^ read Streptorhynchus, 

 78, 27. For Faighney, read Faichney. 



78, 29, 34. For III read IV, 



79, 37. For (ScunapatiUa), read {JeanpaiUia). (W. F. F. ) 



80, 1. Read Baphetes planiceps. (J.S.Newberry.) 

 80, 2. For scull, read skull. 



80, 10. Read Olenellus. 



80, 10 and 12. For M. Middle^ read L. Lowei^ Cambrian. (G. F. M.) 



80, 14. The figure of Bathygnathus borealis is upside dowm. (E. D. 0.) 



81, 7. For qaadraspinos us, read qaadrispinosus. 



81, 30. Gr. F. Matthews thinks Protypus not a good genus, the forms in. 

 eluded under it being too diverse. 



81, 32. The two figures represent two distinct genera. (H. S. W.) 



82, 17. G. F. Matthews objects that formations III b to VII is too great a 



range of time for any species. 



85, 40. For White, read Stevenson. 



86, 26. For Hellerophoiiprofaadas, read Bucania profanda, Emmons, 



whose specific name has the precedency. See Hall's Pal. N. Y. 



Vol. 1, p. 186, B. expansa. (R. P. W.) 

 86, 1. For Bellerophon read Bucania punctifVons. Hall, Pall. N. Y. 



Vol. 1, p. 187. 

 89, 27. For 1885, read 1855. 

 91, 18. Primitia. See Ann. and Mag. Nat. Hist., London, [3] Vol. 16, p. 



417. (G. F. M.) 

 91, 35. Beyrichia ungula, n. s. Clay pole, and those following are still in 



the hands of Prof. Rupert Jones, whose descriptions are expected 



soon. (E. W. C.) 



