V 



24, 36. For formations read faunas. (E. W. C.) 



25, 1. Read Haime. 

 25, 4. Read tabuljae. 



25, 5. For Amynilespes read Amynilyspes. It is not a caterpillar, but a 

 centipede, or millipede. (S. H. S.) Mem. Bost. N. H. S. Tol. 3, 

 1882, p. 178, pi. 78, fig. 1-4, 9. 



25, 12. Same error. 



25, 11. Read Ancyrocrinus. 



25, 14. Read Lower Cartibrian. 



25, 27. Insert Ampyx americanus, tlie only American species of this 



genus directly from American strata. (A. W. V.) See Appendix^ 

 26,17. Insert Anisichnus gracilis See Aj)p>endix. 

 Also A nisopus gracilis. See Appendix. 

 Also Aiiisopus gracilis. See Ajipendix. 



26, 22. Erase reco-j^teris longifoUa. It is a fern : and Annularia longi- 



folia is a horse-tail plant. Both of Brongniart's species. (R. D. 

 L ; and also L. L. who calls this a '' bad error.") 



27, 14. Read sphenophylloides. 



27, 17. Read romingeri. The original figure, borrowed by Collett, is in 



the Proc. A. P. S. Phil. Vol. 17, No. 100, p. 163. 

 27, 19- Read Rominger. 



27, 22. For reeds or bamboos, read cqiiisetacew, land plants of the horse- 



tail family ; but reeds and bamboos belong to the class of Mono_ 

 cotyledons, and do not appear in rocks earlier than the Triassic. 

 (L. L.) 

 After abundant, insert: and of gigantic size. (L. L.) 



28, 2. Read Brongniart. 



28. 21. Add (after Survey) Found plentifully by Lacoe in subconglomer- 



ate shale under Campbell's Ledge above Pittston, Pa. White's 

 Rt. G7, p. 39.— A/. 



29, 2. Anomoepus intermedins. Bird track. Trias. See Appendix. 

 29, 7. For Brogt, read Brongt. 



Antliracerpes typus, Meek & Wortlien. A myriopod insect, from 

 Mazon creek. 111. Proc. Acad. N. S. Philada., 1865, p. 51. Ooal 

 measures. XIII. 



Anthracomarius pustulatus, Scudder. A spider, from Mazon 

 creek nodule, 111. Proc. Amer. Acad. A. & S. Vol. 20, p. 18. Coal 

 measures. JLlII. 



Anthracomartus trilol>itus, Scudder. A spider, from Mazon 

 creek nodule. 111. Proc. A. Acad. Boston. Vol. 20, p. 17. Coal 

 me as u r e s. X III. 

 29, 13. Read Anthraconectes. 



29, 14. Antliracotheniina robusta, Scudder. A hexopod insect (cock- 

 roach), from Mazon creek nodule, 111. Mem. Bost. N. H. S. Vol. 

 3, 1885, p. 337, plate 30, fig. 1, 5, 6. Coal measures, XIII. 



29, 29. Insert Apatichuus crassus. See Appendix. 



Also, Apliodius prsecursor. Horn, Trans. Amer. Entom. Soc. 



Vol. 5, p. 245. Insect found in the bone cave at Port Kennedy, 



Chester Co., Pa. 

 Also, Arabellites i>rocttrsus„ See Worm teeth. 



30, 1. Hinde is now working out this group of Sponges and will make 



some changes. (C. D, W.) 



