IX 



751, 16. Read 69— 3. (E. W. C.^ 



757, 12. Owen's figure looks more like P. semireticulatus. (Dawson.) — 

 6. Read cestrensis. (E. W. C.) 



758, 18. This is not P. cora, of D'Orbigny. Many specimens of P. cora 

 of Indiana were determined and labelled in d'Orbigny's hand, in our Uni- 

 versity Museum, Bloomington, Tnd. (Collett.) 



759, near bottom. Read cestrensis. (E. W. C). 

 760, 14. Read longisplnus. 



761, 15. Read crinoidaL 



762, 8. Read pratten anus. 



763, 2, Erase -'Van Cleve's." On figure, for 1881, read 1883. (Collet) — 

 Bottom line. Read semipunctatus. (E. W. C.) 



767,28. Read alarlcus. — Read Ca^sHZZ everywhere. 



770, 17, 18, 19, Erase from "and" to '<«." CE.W. 0.) — 34. For [?] read 

 6. — 35. For d read 6. 



772, 24. Read P. ovalls. — 26. Read Proptetieus. 



774, 3. ^Q2id Eurypterus, — 25 and 37. Read Protaraea. (E. W. C.) 



775,11. Protaxites = iV^emo^o^/ii/io7i. (Dawson.) Read Prototaxites and 

 to page 783. — 17. Read medullary. 



777,23. ^''Limulus does not move sideways." (E. W. C.) —36. Read 

 cardinal. (E. W. C.) 



778, 4. Read opercular plates. — 6. Read limitare. 



783, 5. Read Protostigma sigillarloides. — Read Protypushitclicockl. 

 (M.) 



784, 1. Read Prototypus. 



788, 4. Read fossiles. — 16. Read rhomboideus. 



790, 12. Read Joggins. 



791, 1. Read Zittel's. 



795, 7. Read Vol. 6, 1883. 



796, 23. Read Cordato-ovata. 



799, 12. Read Mr. Lacoe. — 33, 34, 35, 36. Erase all from " Lesquereux " to 

 "Devonian." On p. 830 of C. Fl. Lesquereux quotes Dawson's remarks on 

 Cyc. valida "similar in all its characters to Sph. macilenta, LI. <fe H. from 

 which it differs by essential characters, and then adds in parenthesis "not 

 mentioned." (Lacoe.) — 6 from bottom. But "these figures differ from 

 the type of C. valida in the collection of the Natural History Society of St. 

 John, N. B. in their smaller size, differing pinnules, and venation and gen- 

 eral port." (Matthew, June 1890.) 



805, bottom, fig. 426. '-This is an error corrected in my Report of 1871. 

 The fructification is in pendant sporocarps. See fig. in Report, and Geol. 

 Hist, of Plants." (Dawson.) — P. gracillimum is probably a Graptolite, a 

 ^^Qoie^ of Dendrograptus. (J. F. James.) 



806, Pteraspis is not known below the Devonian. Scaphaspis alone 

 descends to Silurian. (E. W. C.) 



807, 4. Read Acanthichnus. — Fig. 1. Read Copeya ; also line 13. Other 

 forms are (7. punctata, Hitchc. suppl. Ichn. N. E. pi. 6, F. 14, pi. 18, f. 1, —C. 

 crusculariSy item, no figure. —triremiSj item, pi. 31, f. 4. Three or four 

 other species of Bifurculipes might be added ; but one example suffices. — 

 Line 9. Read Ichnology N. E. 



808, 3. Read rugosus. Another large plate of the same species has been 

 found, but is not described, (E. W. C. May, 1890.) 



809, 4. Read pectini/ormis. 



