XXXI 



Co., Pa. See Cat. OOO, p. 136, 11953, wrongly placed under i. 

 spatulata. (E. W. C.) 

 38. Rectify the same error by erasing S40 (three). 

 348, 21. Read Ling, lecena. 



350, 1. Figs 1, and Inf, are the only figures in this group which really be- 



long to Liiigulella ccelata. The rest belong to other grouj)s. 

 (R. P. W.) 

 17. Insert 1839 after "Con r." (Walcott.) 



351, 6. Read Liniiigea; and transfer the whole paragraph to its alj^habeti- 



eal place on page 341. 

 8, 9. Read liinnarssoiiia. (Walcott.) 

 10. Insert Angelin, after aciileatus. 

 15. Read : (glabella), no eye-ridges on the tixed cheeks, and rounded 



genal angles. (Matthew.) As to Middle Cambrian see note to 



page 344, 1, above. 

 19. Read Coiiocephalites. 

 23. Read Canad. Nat. 

 26. Read Liithoinylacris simplex. 

 29. Read Lithomylaciis aiigustuni. 



352, 7 & 9. Read liithoniylaeris. 



18. Read limbriata. These two western (Utah) insects are given be- 

 cause in Mr. Lacoe's list of specimens in his cabinet at Pitlston. 

 There are a bundled more which might be given if desirable. 



Note.' — As I cannot get corrections for pages 353, and onward, 

 in time for the issue of this volume, they must be given at the 

 end of Vol. 2. 



