. COEEIGEE"DA, 



Pafre 13. line IS. after tpatulnia. insert vancxem. 



Page 33, iino 4. i)Cfore beds, insert fo3siiU"eron3. 



Page 36, line 7, for 1 and 2, read 1 a and 1 b. 



Page 3G, line 9, for 3. 4 and 5. read 2 a-d, 3 a-e. 



Page 42, line -23. for Idas read erynaa 



Page 45. line 20, for VI read vii. 



Page 48, line 14. for La V£tLLE road Leveille. 



Page 48, line 27, for vi read vii. 



Page 49, line 33, for 3 e read 4 e. 



Page 52, line 23, for Tii read LXiii. 



Page 76, line 10, before S!>ecie8, insert other. 



Page 78, line 26. after median, insert line. 



Page 10), lino 4, for 1 c read 1 e. 



Page 101, line 7, for 1 I read 1 i. 



Page 101, line 8, for 1 k, u, re,id I k, I 



Page 101, line 10. for 1.5 re.id 13. 



Page 108. line 21, for textllls read jania. 



Page 109, line 32, tUU this line. 



Page 111, line 10, for xix a. rea<l xv. 



Page 111, line II, for Strophodonta read Strophotaena. 



Page 112, line 9, for dmira read cafuta. 



Page 113, line 9, for 8 read 6. 



Page 116, line 7, for no species read one speclee. 



Page 138, lines 4 and 5, dele reference to Plate 23. 



Page 136, line 19, for konincki read koninckiana. 



Page 137, lino 19, refer species to Platk xxii. 



Page 138, lino 12, after forty insert (including bifurca- 

 tions.) 



Page 143, line 1, for marlcatna read mnrlcata. 



Page 144, line 19. fur (dg. 00) retd (flg. 33). 



Page \X, line 1, refer species to Pi,atk xxiii. 



Pago IRS. line 2:1 for Productiia) read Productna 

 (Productellal papulata In. s). 



Page 1<>6, line 4. insert beneath, Productut Mriuiut: 

 Bau., 10th Rep. St. Cab p. 175. li«7. 



Page 167, line 24, for 1-9 read 18-27. 



Page 197, line 29, for 9 read 24. 



Page 171, line 15, for 19-23 reail 1-9. 



Page 183. line 29, for or two. read one, t^vo. 



Page 188, lines 1 ami 3. for Cvrt>«xa read CVUTIXA. 



Page 189. line 2, for Splrifer road Nplrlfera. 



Page 196. line 12. for species read shells. 



Page 200. line 23, for 34 read .15. 



Page 201. line 3. for 34 read 35. 



Page 205, line 21, for XXX reaii XXXI 



Page 207, line 30, alter nf the, insert area. 



Pago 218, line 21, for 33 read 34. 



Page 223, line 22, for S. arcta read S. arata. 



Page 225, line 17, dele sentence refeiTing to casts. 



Page 229, line 5, for xxxviii read xxxviii •. 



Page 231, line 18, for xxxii read xxxiii. 



Page 211, line 11, for greasly read gi'eatly. 



Page 246, lines 10 and 17, for XLI read XUI. 



Page 246. line 12, for 15 read 17. 



Page 246, lines 18 and .33, for xi.II read XLI. 



Page 250, line 2, for xxxii read xxxiii. 



Page 251, line 13, for xxxii read xxxm. 



Page 251, line 15, for 32 read 31. 



Pago 251, line 18, dele 2d oomma, and insert variation. 



Pago 253, line 32, for marylandica read cumberlandia. 



Page 262, line 27, for 5 o read 5. 



Page 270, line 3, for xvii read XLiv. 



Page 271, lines 9 and 10, dele reference to dotted lino. 



Page 279, line 33, for xiv read XLV. 



Page 287, Hue 9, for 10 read 8. 



Page 287, lino 10, for 8 read 9. 



Page 287, line U, for 9 read 10. 



Page 290, line 13, after ft insert (see figure on Explanation 

 of Plate.) 



Page 299, lino 18, change reference of ^. naauta to Jour. 

 Acad. Nat. Sci. Ph. vol. viii, p. 265. 1842. 



Page 305, line 33, for shade read shale. 



Page 329, line 2, for LIII read Lil. 



Page 329, lino 10, dele may— may. 



Page 343. line 2, for Liv read i,iv- A. 



Page 344, lines 2 and 25, for nv read LIV A. 



Page .346, line 2, for LV re.ad liv a. 



Page 349, line 1, after aitephanl add (n. s.). 



Page 357, line 1, after niyHla add (n. s). 



Page 361, line 2, for LVI read Lvii. 



Page 364, line 16, for lvii read Lvi. 



Page 373, line 37, dele P. obsolescent. 



Page 380, line 6, for LVIII read LVIII A. 



Page 384, line 28, for LIX read LVIII A. 



Page 385, line 7, for LX read LVIII A. 



Page 388, line 5, dele without appendage. 



Page 397, line 1, for Cryptouella 1 road Terebra- 

 tula. 



Page 399, lino 17, for LXI read LXI A. 



Page 401, line 2, for lxi reail LXI A. 



Page 402, line 2, for LXI read lxi a. 



Page 403, line 10, for LXI read lxi a. 



Page 408, line 33, for LXii read lxi a. 



Page 412, line 3, after Pirate add lxiii. 



