ERBATA. 



Page 11 20th line from bottom, for "Winchester" read "Manchester." 



Page 35 4th line from top, for "sandstone" read ''limestone." 



P.-w 86 13th line from bottom, for "No. 2" read "Coal No. 2." 



Page 46 3d line from top, for "fussels" read "fossils." 



Page 49 21st line from top, for "localiiy" read "locality." 



Page 74 3d line from top, for "cimulatus," read "lunulatus." 



Page 77 8th line from bottom, for "subhromboidal" read "subrhomboidal." 



Page 80 15th line from bottom, for "anterior-lateral" read "antero-lateral." 



Page 91 15th line from top, for "obliquity cuneate" read "obliquity and cuneate." 



Page 108 10th line from top, for "situated a" read situated." 



Page 120 llth line from bottom, for "Cochiliodus" read "Cochliodus." 



Page 139 14th line from bottom, for "antero-latera" read "antero-lateral." 



Page 157 Bottom line, for "porterior" read "posterior." 



Page 163 17th line from top, for "contracts" read "contrasts." 



Page 187 Top line, for "escribed" read "described." 



Page 210 2d line from top, and page 211, 10th line from top, for "crassidus" read "cras- 



sidens. 



Page 240 Top line, for "costal" read "costal." 

 Page 254 12th line from bottom, for "tenticles" read "tentacles." 

 Page 255 13th line from bottom, for "snarply" read "sharply." 

 Page 259 Top line of diagnosis, for "Dormel" read Dermal." 

 Page 285 llth line about fr.om botton, for "annal" read "anal." 

 Page 299 Top line, for "sliping" read "sloping." 

 Page 333 In head line "Parishodomus," for "GENSS" read "GENUS." 



