XXV 



249, 14. Read XIII. 



33. Read scale and spine. 



260, 13. Read Per mo-carboniferous, XVI, (I. C. W.) 



25. Read parenchyma. 



32. This is the tigiire of a Silurian crinoid. (R. P. W.) 



251, 14. Read Schodack. 



16, Read Rusophyeus bilobatus, 



17. Read Taonuras for Spirophyton. (R. D. L.) 



21. Insert Harlan, and read Arthrophyciis harlani, Hall, for Harlaiiia 



lialli, Goepp. See Hall, Pal. N. Y. II, p. 5. (R. D. L.) 



22. The same correction. 



25. Read graphic as. (E. W. C.) 



252, 4. The same correction. 

 7. Insert Harlan. 



12. Read Fucoides — "Is not this SeoUtkus'! (J. W. D.) 



253, 1. Read (ventricosa). 



12. Fytolithus. Erase the line. (E. W. C.) 



30. Add : xMem. Bost. S. N. H. Vol. 3, 1885, p. 329, pi. 30, fig. 2, 3 ; speci- 

 Anen in Lacoe's collection at Pittston. (R. D. L.) 



33. For {Eoblattina 'f) read : now Etoblattina balteata. 



33. Insert Genopteryx constrieta, Scudder ; a hexapod insect found 

 in a Mazon Creek nodule ; Mem. B. S. N. H. Vol. 3, 1885, p. 327, 

 pi. 29, tig. 4. Coal measures. Now in Lacoe's collection at Pitts- 

 ton. XIII. 



33. The figure of G. balteata is upside down. (C. D. W.) 



39. Read 1879. Vol. 3, p. 110, pi. 6, figs. 9, 10. 



40. InsertGerablattinafasoigera (J5Za/;^^>^a) Scudder. A cockroach 



from the base of the Conglomerate near Pittston ; in Lacoe's col- 

 lection. Mem. B. S. N. H. Vol. 2, 1879, p. 113, pi. 6, fig. 1, 2.— 

 XIL 



254, 4. Read XII. (1. C. W.) 

 5. Read Gingko. 



Geralinura carbonarius ; Geraphrognus carbonarius ; Ger- 

 apompus blattinoides,Gerapompu8 extensus, Gerarus danse, 

 Gerarusmazonus, Gerarus vestus ; and Gerephemera simplex : 

 all insects described by Scudder will be found in the Appendix. 

 22. Read Jonkin's farm. And for east read south. (E. W. C.) 



255, 38. Erase 6. (E. W. C.) 



39. Read Cardiola speciosa. (E. W. C.) 



256, 1. Read discoideus. 



10. Head Leiorhynchus limitarls. (R. P. W. ) 



257, 5. Read crenistria. 

 10. Read ferratus. 



258, 23. Read interseptal. 



37. UQ'a.d scitulus. (E. W. C.) 



259, 8. Erase 104-39, two. (E. W. C.) 



260, 7. For Gorgonia, read Dictyonema. See Hall, Pal. N. Y. Vol. 



(R, P. W.) 

 24. Same correction. 

 32. Read Gorgonia. 



261, 1. Read Dictyonema. 



26. Head {.sphenomya cuneata.) 

 4 



