ADDENDA AND CORRIGENDA. 



Pag-e 14, iidd lo reference of A. laitcs, plate 81, tig-. 5. 



Page 30, for A. cloiif/atus read A. celsm. 



Page 54, add to reference of L. priamcs, plate 82, tig. 6. 



Page 74, line 2, for LXXXI read LXXXU. 



Page 82, line 3, for P. crenulatits read C. crenulatits. 



Page 114, line 23, for rectirulata read reticulatn. 



Page l.")7, line 11, for anterior read posterior. 



Page 1G7, for A. Bigshiji read L. Big.ibyi. 



Page 220, line 8, for N. Y. read Pa. 



Pages 18G ami 23S, lines 4 and 7, respectively, for Alleghany read Cattai-augus. 



The names Philipsbiirgli and Rockville, are localities referred to in the earlier Geological Reports, 

 from which many fos.sils were obtained. The former (Philipsburgh) is now known as Belmont. Rockville 

 was a settlement near the mouth of Rock creek on the Gene.see, in the township of Belfast, during the con- 

 struction of the Genesee Valley Canal. The name does not now appear in the Gazetteer. 



