IX 



61, 12. i^\)r Merista, read Meristella. (J. H.) 



61, 13. For Atrypa, read Orthis. (J. H.) 



62, 1. The first tig are is a Meristella. (J. H.) — Terelbratula lincklseni, 



Hall, Pal. N. Y. Vol. 4, pi. 60, fig. 61 to 63. (R. P. W.) 

 The second figure is a Rhynchonella. (J. H. and R. P. W.) 

 The third ligure is a Meristella. (J. H.) — Meristella Iiaskinsi, 

 Hall, Pal. N". Y. Vol. 4, pi. 49, f. 96, drawn from the same speci- 

 mens. (R. P. W.) 

 62. 6. For Atrypa ? Erie Co. read Ijaniilicardium. (J. H.) 



62, 10,19. For V. read Upper. Same error in line 26. 



63, 3 and 12. The same error. 



64, 6 and 35. The same error. 



65, 1. Read Haime ; and for Oaninia, read Caninia. 



66, 13. Heliophyllum halli ; one individual, with the torn o(f tubes of 



another attached individual left sticking to the front of it. ( J.H. ) 

 These were thought to be a parasitic ^w/opora; and the coral 

 was wrongly named Cy slip liy Hum. — Aulopora tuboeformis is 

 usually found upon Cystiphyllum, but somewhat rarely on Heli- 

 ophyllara. (J. H.) 

 (SQ^ 39. Read Waterlime. 



67, 19. For Avicula, read Leptodesma aeanthoptera. (J. H. ; R. P. W.; 



H. S. W.) 

 67, 25. Erase "has a sharp hind wing," for several hundred other species 



have the same. (J. IT.) 

 67, 26. For Avicula, read Ambonychia bellistriata. (R. P. W.) 

 67, 29. For Avicula, read Ambonychia carinata. (J. H. ; R. P. W.) 



67, 33. Loi^aine Avith one r is correct. (A. W. V.) 



68, 1. For Avicula, read Pterinea deinissa. (R. P. W. ) 

 68, 11. " Lyonsid is now Sedgwickia.''^?? (J. H. ) 



68, 17. Avicula elliptica. (R. P. W.) 



68, 26. For Avicula, read Actirioi)teria emacerata. (J. H. ) — Fig. a is a 



Pterinea. (R. P. W.) 



69, 1 to 3. Not identified on Claypole's revised copy of his Catalogue. 



(E. W. C.) 

 69, after 6. Insert Avicula Ixoneymam, Hall, Silurian of Nova Scotia, 



Dawson's Acadian Geology, p. 604, allied to A. emacerata. (J. 



W. D.) 

 69, 7. The second figure (from Rogers) is a Pterinea. (R. P. W. ) 

 69, 15. The figure of A. leptouota, is upside down. 

 69, 17. For Nethart's read Neihart's. 



69, 26. For Avicula read Pterinea rugosa. (R. P. W.) 

 69, 31. For Cytheria read Cytherina^ and for rogosa, read rugosa. 

 69, 35. After speciosa insert {Glyptocardia retrostriata^ Von Buch. ) 



(J.H.) 

 The first figure (H. 106, 1,) is a Chonetes. (R. P. W.) 

 The second small figure (H. 106, 2 a) is Cardiola speciosa^ Hall, 



Pal. N. Y. A^ol. 5. (R. P. W. and E. W. C.) 



69, 37, 38. Not only the Cashaqua shales, but also the Genesee, Hamilton, 



and Marcelhis. (J. ti.) 



70, 5. For Avicula read Pterinea subpl ana. (R. P. W.) 

 70, 17. For treiitoneonsis, read trentonensis. 



2 



