EKRATA FOR VOL. I. 



The following corrections and additions have been kindly sent to me on 

 returned duplicate sheets of this volume as it passed through the press. 

 They are here printed in a form which will allow those who value them as 

 highly as I do, to cut them apart and paste them upon the pages where they 

 belong. Typographical errors of no importance may be neglected ; but no 

 scientific mistake should be allowed to stand in print uncorrected wdien a 

 correction of it has been obtained. I take this occasion to express my grati_ 

 tude to my correspondents, all and singly. It will be seen that I have 

 availed myself of every emendation, or expression of opinion, made to me, 

 adding the initials of the annotator, as follows : 



J. D. D. Dana, Prof. J. D. — of New Haven. 



J. W. D. Dawson, Sir James W. — of Montreal. 



E. W. C. Claypole, Prof. E. W.— of Akron, Ohio. 



-T. C. Collett, Dr. John — of Indianapolis. 



E. D. C. Cope, Prof. E. D.— of Philadelphia. 



W. M. F. Fontaine, Prof. W. M. — University of Va. 



J. H. Hall, Prof. James. — of Albany, N. Y. 



C. H. H. Hitchcock, Prof. C. H.— of Hanover, N. H. 



G. H. H. Horn, Dr. Geo. H.— of miiladelphia. 



J. F. J. James, Jos. F. — of Washington, D. C. 



R. D. L. Lacoe, Mr. R. D.— of Pittston, Pa. 



J. L. Leidy, Dr. Jos. — of Philadelphia. 



L. L. Lesquereux, Dr. Leo.— 'Of Columbus, O. 



G. F. M. Matthew, Mr. G. F.— of St. John, N. B. 



S. A. M. Miller, Mr. Sam. A.— of Cincinnati, O. 



J. S. N. New^berry, Prof. J. S.— of Columbia Coll, N. Y. 



J. M. S. Safford, Prof. J. M.— of Nashville. 



S. H. S. Scudder, Mr. S. H.— of Cambridge, Mass. 



J. J. S. Stevenson, Prof. J. J. — Univ. City of New York. 



A. W. V. Vogdes, Lieut. A. W.— Fort Hamilton, N. Y. 



C. D. W. Walcott, Mr. C. D.— U. S. G. S., Washington. 



I. C. W. White, Prof. I. C— Morgantown, W. Va. 



R. P. W. Whitfield, Prof. R. P.— Amer. Mus. New York. 



H. S. W. Williams, Prof H. S.— of Ithaca, N. Y. 



A. W. Winchell, Prof Alex. — of Ann Arbor, Mich, 



N. H. W. Winchell, Prof. N. H.— Minneapolis. 



Note, The first figure indicates the Page : the second^ the Line, 



1, 1. Acantherpestes major. (Meek & Worthen) Scudder. Mem. Bost. 

 Soc. N. Hist. Vol. 3, 1882, p. 150—156, pi. 11, fig. 1—4, 6—8, 10, 11. Amer. J. 

 S. Vol. 40, p. 25. Geol. Sur. 111. Vol. 3, p. 558. In Lacoe's collection at Pitts 

 ton, Pa. 



i 



