30, 



23, 



30, 



29. 



31, 



4. 



31, 



6. 



31, 



7. 



32, 



4. 



33, 



1. 



33, 



14. 



33, 



28. 



34, 



1. 



VI 



For an Loiip, read au Loup. 



For M. read L. i. e. Lower Cambrian. (C. D. W.) 



For M. read L. (C. D. W.) 



Archseogryllus priscus. Sciidder. A hexopod insect (cockroach) 

 from Ohio. Proc. Bost. S. N. H. Vol. 11, 1868, p. 402. Loiver 

 Carboniferous. XIII. 



Arcb8eoi>liyton, a very doubtful plant. (G. F. M.) 



Read Goep. — Same on p. 33, line 11. 



Archseopteris haHiana can hardly extend from the Lower Devon- 

 ian to Carboniferous. The different figures given of it seem suffi- 

 cient proof of different species. (G. F. M. ) 



CycAopteris jacksoni, a distict species from Archteopteris balliana. 

 (J. W. D. ) who adds : ^'•A. gaspiensis of my Geol. Survey Report, 



1882, is certainly a distinct species." 

 "Lesq. in Coal Flora, 1880, p. 304, remarks that the figure in the 



Geological Survey of Canada, pi. 15, f. 175 represents," etc. (Les- 

 quereux's correction of the passage. MS. letter of Dec. 27, 1889.) 

 After "reference," add: " but refers this fructification to A. jack- 

 .soni, because tliat is the only species found with it. (See Daw- 

 son, Second Rt. on Erian Plants of Canada, L882, where the 

 species of ^rcAoRo^^ieris are fully discussed." (J. W. D.) 

 34, 5. Head A. jacksoni. Also A. hitchrockiana. (L. L. ) 



34, 6. Add : /S'ee Appeiidix. 



35, 1. For "identifies it with," read : "refers it to." (L. L.) 



35, 3. "Abundant under Campbell's Ledge (XII) near Pittston," read 

 " Abundant in the Coxton bluffs of the Susquehanna river above 

 Pittston, that is, in the outcrops of the CatHkill formation.'''' As 

 the passage now stands it is a bad error. The note that begins on 

 line 6 indicates the real locality and formation. See Ap2)en(lix. 

 35, 11. Arcliseopterls obtusa. Figures given are those of true Archmop- 

 t er is pliints. (G. F. M.) Fig, 188of the Canada survey (referred 

 to on page 36, line 9) does not properly represent the venation ; 

 see fig. 188 b, on the same plate XVI. (G. F. M.) 



For Kocf/f/uathia on the figure, read Noeggerathia. 



For XI^ read IX ; i. e. for Mauch Chunk read Cat skill. 



After "species" add: "but see Dawson's Report of 1882, plate 22> 

 where a better figure of ihe fossil is given." 



For feather, read frond. 



Read : The Cyclopteris obtusa in Geol. Sur. Canada, Fossil plate 

 16, fig. 188, is said by Lesquereux to look like ArchcEOjyteris. 

 (L. L.)— But see plate 22, 1882, above quoted. (J. W. D.) 



Read Owen's. 



Read laxa. 



ArcMitiylacris acadicum, Scudder. A hexapod insect (cock- 

 roach) from Pictou, N. S. Acad. Geol. 2d. Ed. 1868, p. 388, f. 153. 

 Coal measures, XIII? 



Read ArcliimylacHs parallela. (E. W. C. ) 

 37, 4. For Vol. 8, read Vol. 3. 



37, 10. Archimylacris paiicinervis, Scudder. A hexapod insect (cock- 

 roach) from Mazon Ck., 111. Lacoe's List of Pal. Foss. Insects, 



1883, p. 5. Zittel, by enumeration and locality, p. 576; Coal meas- 

 ures, XIII. 



35, 



12. 



35, 



18. 



35, 



39. 



36, 



6. 



36. 



8. 



36, 



12. 



36, 



14. 



37, 



1. 



